Java Training In Chennai

JAVA Industry Updates

Trends In Java

In recent times, Java has evolved into one of the top-rated programming languages among various organizations in the market. There is a consistent release of updates related to Java due to its depth of features, stability along with predictability. It has made it easy for developers to accomplish their tasks on time. Apart from the developers, even the organizations are making it into their upcoming applications. If you are looking for an opportunity to learn Java, the FITA Academy is the perfect place to start. We offer this Java Training in Chennai that is perfect for newbies and experienced developers alike. Our courses are designed to help you develop your skills in this powerful programming language. So whether you’re looking for an introduction to Java or want to learn how to create powerful applications, our courses are the perfect way to do it.

There has been an enormous feature that has made it reach the top on the list. Some of them are enlisted below:

Independent of the platform- It can be run over any system due to the presence of an intermediate format. The developers can write the program once in Java language and will be able to execute it on various platforms such as Linux, Windows, or Mac without the necessity of re-compilation.

Familiar- Java is nearly the same as that of C/C++ and is deployed for fixing the disadvantages occurring due to the latter. Therefore, if the developer is well-versed with the C/C++ language then it might be very simple for them to get along with Java.

High performance- It yields relatively high performance when compared with other languages. Moreover, it is possible to write computer intensive code that can be interfaced with the Java platform in order to improvise the performance with the use of Java Native Interface.

Multithreaded- This platform is designed along with multithreading capabilities for built-up into the language, which means the developer will be able to build applications with different concurrent threads of activity that results in highly responsive applications.

Robust- It is considered to be very strong with the collection of garbage in an automated way with complex free memory management. Thus, it is preferred by the companies.

Secure- It is designed in such a way that it aids the user in implementing their creativity for various applications. It is very tough for any virus to affect applications built by deploying Java. Be a pro in Java by enrolling yourself into our Java Course in Chennai.

There are two most recent Java releases, Java 10 and Java 11. However, all older versions should continue to be supported until the end of the year itself. Aside from that, JDK 11 is also the one that is planned to receive long-term support from Oracle, since it was the one that was chosen from the start.

Java 9

It was released in September 2017 making significant changes along with necessary updates to Java 8. The most important update amidst them is considered to be the new architecture along with a different structure to Java. It makes use of a modular structure rather than making use of the traditional model.

The advantage of modularity is the ability in setting up customized configurations of various modules and removal of any unnecessary modules. That could greatly increase the efficiency along with the scalability in various apps built over Java. The eventual goal of modularity push is to make Java more approachable to smaller-scale machines, particularly smartphones.

It is also important to mention that the JShell Read-Eval-Print-Loop is the most significant improvement in this version. Additionally, developers are now able to get immediate feedback on how the code is performing based on the way it is being developed. If you are looking to learn Java for a career? FITA Academy is the best Java Training Institute in Chennai! Our experienced and qualified trainers will help you get the most out of your learning experience. With our courses, you’ll be able to develop essential skills that will help you in any field. Contact us today to learn more!

Java 10

Its release happened in March 2018 not more than six months after the launch of Java 9. It didn’t make any crucial change but was helpful for some basic issues to be fixed. And the very crucial feature was the inclusion of a new garbage interface for its collection in Java 10, which organizes and also concentrates source code for the collection into a single place instead of scattered the files and patching throughout the environment. This new version of Java also made inferences about the variable type when the developer makes use of the “var” keyword.

Java 11

This is the latest version that has been released this year in the month of September, which marks the deadline of a monumental shift in the Java ecosystem. Some of the pre planned updates included in this are standard browser updates along with upgrading the Java to Unicode 10, which was previously making use of Unicode 8.

Java 11 will definitely help the developers to get rid of the support for Java EE along with the COBRA modules. Since the new long-term release of support for Java 11 it has been considered as a standardized improvement from the previous versions such as Java 9 and 10, which applies to the customers with commercial support from Oracle. In addition, public updates related to Java 11 will come to an end after a period of six months when the next version Java 12 will be released into the market.

JDK 11 is an elegant light on the things that modify the way of coding by developers. Some of the new trends in the market for JDK 11 are listed below:

• Java 11 is being used more and more in web development, artificial intelligence, and cloud-based applications.
• The use of Java 11 JVM support for lambda expressions and stream objects has made it more convenient to work with these objects.
• The rise in popularity of containers has led to the increased use of Java 11 in these applications.
• The increasing popularity of blockchain technology is also contributing to the increase in Java 11 adoption among developers.

Latest Frameworks Of Java Virtual Machine

There are so many virtual machine languages for java like Clojure, Groovy, JRuby, Jython, Kotlin, and Scala. These languages have been evolving in the software industry for a relatively long time and let us have a look at the new JVM languages.

• JVM is the virtual language of java which is designed for the java machines and it changes the java code into bytecode. Take advantage of the best Java Training to gain knowledge about the multiple facets of a programming language like Java as well as JVM, JDK, and JRE by joining a class today.
• Take advantage of the best Java Training to gain knowledge about the multiple facets of a programming language like Java as well as JVM, JDK, and JRE by joining a class today.
• Programmers use primary languages and secondary languages in their coding and make their builds as efficient one. The knowledge about multiple languages has become the predefined criteria for an experienced developer.

Let us have a look at the Scala, Kotlin and Groovy programming languages for the JVM as they are widely used. Class loader, method area, JVM language stacks, heap, native method stacks, PC registers, native method stacks, execution engine, native method interface, and native method libraries are the components which form the architecture of JVM.

• Scala

Scala was introduced to the industry in the year 2008 by Martin Odersky. Scala is largely used in data science projects and it is written to target the Java virtual machine. Scala developers do not have the need to learn the other programming languages but due to the announcement from Google for the spring and Google, the Scala is now replaced for the Kotlin. Some of the features of Scala were introduced in Lambdas and Stream. Scala is a very good language to learn for the Java developers. Play, AKKA, and spark are the popular frameworks of Scala. Learning a new language boosts knowledge about the different data structures, coding designs, different types of the algorithm, and different approaches to the problem. So learning new languages like Scala will help the programmers to write code better, read the better code, debug code and run the code quickly. Java Training with the Best Java Training Institute in Chennai makes your bio-data with high priority due to the programming language knowledge.

Many giant companies like Uber, Sony, Amazon, and Autodesk are using the Scala language to enhance customer satisfaction with a wide range of reachable services. Scala is the perfect blend of functional programming and object-oriented programming. The parts of the Java language where some restrictions are levied are unleashed in the Scala language which increases productivity.

Some of the good features in the Scala language are immutable data structures with no effects on the environment, the simple one-liner language with less punctuation, short syntax, condensing map and filter, and finally, the code will support both the multiple inheritances and different types of capabilities.

• Kotlin

In the year 2011, JVM language Kotlin was introduced and this is the official language for Android development. The announcement regarding kotlin was made by Google in the year 2017. Kotlin is the language alternatively used for Java and it is the official language for android. Kotlin was designed by the company called Jet brains and it is used as an open source platform by the programmers. The simplicity in the language made this language a popular language. For instance fun keywords are used in the Kotlin, semicolons which are mandatory in the java are optional in the Kotlin language. The keywords and ranges are well used in the Kotlin language. Java Classes in Chennai offer the training to make the learning curve flat from the upsurge.

Functional programming and object-oriented programming are two different concepts in the programming world. In functional programming functions cannot be stored in objects and in object-oriented programming, the programming is based on objects. For the programs which can be divided into smaller parts, object-oriented programs yield better results.

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When converting the java program into kotlin it is clearly known that kotlin is a handy language that supports the object-oriented nature of java. The other classes inherit with the keywords in the Kotlin classes whereas in the case of Java the final keyword is marked as inheritable. In the case of overriding the methods are marked as open and the subclass is marked as an override. The Kotlin makes the things explicit and it is not operated with the default operations.

The checked exceptions in Java are lacking in the kotlin. The expenditure on using Java and Kotlin is the same. The java set only properties are easily fixed in Kotlin. Some of the new things in Kotlin for the Java developers in Kotlin are the extension functions, support functional programming and add coroutines.

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There are similarities in between Scala and Kotlin like the notations like immutable declarations using va1, mutable declarations using var, narrow in the declaration of lambda function, and the usage of a single arrow and double arrow. The getters and setters are available in a java class and calling the java code from the kotlin language works well in the applications. These features are common in Java and Kotlin and the name for getter and setter in Kotlin is properties.

• Groovy

Groovy is a simpler language than Java and it is used for unit testing and for the virtual machine language. Groovy first version which is Groovy 1.0 was released in the year 2007 and the second version which is Groovy 2.0 was released in the year 2012. For the Java developers, the learning curve for Groovy is flat and the behavior of Groovy is simple to understand for Java developers. For instance, in Groovy the operators call equals() method but will not compare the instances.

J Unit along with Groovy syntax is used for the testing process. Java Training in Chennai has a good track record for the training and placement in the training industry. Spock is the framework which is used to write the better testing scripts with Groovy. For parameterized tests, it gives a graphical representation. Groovy is suitable for the scripting language and for the testing projects. Java collections, string, array, Regexp, iterable, object and char sequence are some of the new additions in Groovy which have to be learned and explored. Learn the Groovy language and project yourself with multiple language knowledge in the biodata to derive a good impression in the job hunt. This is where FITA Academy gives you a clear virtual picture about the different concepts in the language and helps every individual student to get placed in the respective domains.

Tools Knowledge Needed For Java Developer

The job of the developer is not only confined to the development of the application but also the knowledge of different frameworks, libraries, tools, and architectural designs is essential. Enhancing the knowledge from the perspective of the market demand is the right dimension which makes the programmers as the expert programmers.

Several tools based on Java are popular nowadays, so let’s look at some of them and shed some light on their widespread use.

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To master the knowledge it is essential to learn about the importance of these tools which gives an idea of the usage of Java language. It is difficult to track the fault in the web application and it can be from software, hardware, back end, external factor or internal factor. Using the tools help for the quality of the deliverables. These are the top tools which require java basics for a java developer, and knowledge of these tools is required for high profile jobs.

• JIRA

JIRA is used for bug tracking, issue tracking, and project management. JIRA creates the spring cycles to track the process and progress in software development. Mastering the skills to use the JIRA helps the developers to acquire the skills to plan, track, and manage all the agile software development projects. Scrum, Kanban, Agile at scale and mixed methodologies are the frameworks for the usage of the JIRA software tool.

• GIT

GIT is the version control software tool and it is used to track the changes in the set of files or source code. The branching capabilities in the GIT tool help to have centralized version control and the code base is isolated from the development environment to track the changes. If there is a change in the version of the software, change in the document used for the development, change in the large websites then these changes are accordingly handled by the GIT tool.

• Jenkins

Continuous integration and continuous delivery are important parts of software development to maintain the quality in the software development project. Compiling projects, running unit tests, integration tests, generating documentation, and uploading artifacts are the non-human parts of the software development which is taken care of by the Jenkins tool. It is easy to make changes in the software development with the Jenkins tool and it has a plug-in to support the continuous integration process in the software development.

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• Selenium

Selenium is the best tool for the Java developers to automate the HTML and JSP files. It is also used for web browser automation. Selenium is the tool which is used along with the Java, Ruby, Python and C #.

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• Groovy

Groovy is the tool which supports testing and development. The syntax of the Groovy tool is used to run the tests in the integrated development environments. Apache Groovy is gaining popularity among the Java programmers because it is an object-oriented dynamic programming language for the Java virtual machine. Groovy support for the static typing, groovy support for the dynamic typing, the syntax of Groovy is direct, brief and concise, it is used to do the unit testing in development, the native syntax for the lists and associative arrays is helpful for the threads, supports the XML and HTML, it is suitable for domain-specific languages like Java, C, and C++.

• Spock

Spock is the tool used by the Java developers for the Java applications and Groovy applications. Spock is called a specification language as it is written in Groovy. Spock is used for the continuous integration servers, build tools and it is compatible with the IDEs. Skills needed for a developer are unit testing knowledge, front end technologies knowledge, big data knowledge, full stack knowledge, and DevOps knowledge. The developers need to understand the software layer and the presentation layer to improve the user experience and nail towards perfection.

• Maven

Maven is used for the project management and reporting tool. The Project object model which is called as POM is used to manage the build, reporting, and documentation with the information processed. Maven downloads JAR by default and it is helpful to use the third party libraries. Maven takes care of the dependency management and standardizes the logical relationship between the activities.

• Gradle

Gradle is the build tool for Android and open source tool for the automation system. It makes use of the domain specific language and it makes the configuration part easy. This is considered the best build tool for java because it has flexibility and control of Ant, makes the configuration easy, and the dependency management is supported by the ivy. It is one of the tools used by the users for a relatively long period.

• Docker

Docker is the open source used for the physical or cloud environment for the deployment of the application. It helps to run the distributed applications on the laptops, data centers, VM’s and cloud. It works well with Windows, Linux and cloud systems. Docker is used for the testing, deployment and continuous integration. IntelliJ IDEA provides the support to the docker tool and it is the official plugin for the Java developers. Oracle beans are the tool for the application development on windows, mac, Linux and Solaris operating systems. The latest version of the Oracle Beans is included with the Docker tool. Docker provides browser-based IDE for RESTful web API.

• Linux

Linux is the best operating system to learn along with java as a beginner. Arch Linux, Debian, Ubuntu, SUSE, Fedora, and Gentoo are the popular distributions of Linux. Ubuntu is the most highly used system for java development. These distributions are used to set up the environment and develop the coding with compatibility. Arch Linux is simple and the structure is easy to shape the system as per our own needs. Debian is used in case of lower level sources with minimum friction between the workflow and working code. The metadata repository and the source or build cohesion is good in the debian operating system. Ubuntu and Linux Mint are the best tools. Proprietary software is installed into Ubuntu and it uses a fork of GNOME 3. OpenSUSE has amazing features for troubleshooting the bugs and it works flawlessly. Fedora is a friendly tool and it is a straight forward tool with web-based and text-based interfaces.

• IDE

Eclipse IDE check the code, do refactoring and check the syntax of the code. It offers support for multiple languages like C C++ and PHP.

• Unit test library

Junit is the unit testing framework which helps to test the code and it helps to track the bugs in the functionalities of the web page. Using JUnit testers can run a block of codes and sometimes do the testing to write the code. Thus it helps for the quality of code at the back of the web application.

• Your Kit

Your kit is the tool for the java profiler and it is used to monitor the remote application. The UI of the web application runs on the developer machine and the server machine. The profiler agent is attached to the JVM and also to the welcome screen to monitor the functions, web performance of the concern page.

• Mockito

Mockito is designed for the mock test which creates the mock test, verifies the mock test and stub the mock test. If the API used in the Java language is simple then this library can be used to avoid the verification errors.

• Find Bugs

It is a free, easy and useful tool for software development that is used for software automation. The majority of Android applications are written in Java, many popular trading apps like Murex are written in Java, many big giant companies like Google, Amazon and Flipkart use Java, as it provides good security over the run time environment and as the Java learning community is huge, the risk of virus or harm is low.

These advantages make Java the best programming language, and the constant innovation in software frameworks, libraries, tools, and architectural designs make Java developers the most skilled professionals.

You can expand your opportunities in the multiple domains of placement by joining the Java Course at FITA Academy. Java is the statistically built language and its wide usage throughout multiple industries demand for Java developers in the training industry. Therefore, the ultimate goal of our training is to assist students in finding the job they desire and making them passionate about learning Java.

Hence, the scope for Java developers will always be a place to explore your coding ability and will act as a ladder to raise the height with respect to your is despite the reason there is numerous language available for coding organizations are looking forward to skillful Java programmers.

Expectations with JDK 13

JDK has many attributes and the developers are focused towards quality. The multiple lines of source code are covered by raw string and it is the new attribute expected from the JDK 13. Rawstring is a literal with string in which the escaping rules are eliminated and everything is literal or direct. This is the feature which is expected with the JDK 12 and it is postponed to JDK 13. The characters with the sequence are described without java indicators and these strings are focused towards grammar apart from Java. After the testing process the new attributes are added to the JDK 13 with the quality in the production. JDK 14 is expected to be high quality with the raw string after its first release.

We will take a look at how the raw string simplifies the functions of Java by making use of it by becoming a part of the Java Training in Chennai at FITA Academy and learn the newest trends in Java, one of the most popular technologies in the world.

This reduces the usage of the java escapes and the java line terminator for keeping the character sequence readable with the code. The concept of string interpolation is not added to the raw string and in future it is expected to take part in the raw string.

Some of the advantages of these strings are already added in the RSL and some are not added. The enhancements can be with the line support, trim, and margin management and escape management by using raw string.

Beta implementation is added in the JDK and switch expressions are added which help for the behavior with control over the flow. This helps for the blocking of calls, synchronous and makes the blocking as free.

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Pending releases of Java

Project loon is the other feature which is not added to Java fully and this helps for optimizing the performance with the simple abstraction and leaves less number of footprints. This manages the threads efficiently and it introduces the fibers as light weight with the usage of JVM. The memory and the task switching with the fibers are almost close to zero.The ultimate need of this is to add the light weight thread to the java ecosystem.

The java program is designed to use the threads easily and the primitives are synchronized with this. If there is mismatch in the orders then it is difficult to handle for the server. Integration with the other language and integration with the code is one of the important functions which an API should have. Many asynchronous API are created in the Java ecosystem to handle the integration part in Java. It helps to run the existing code and reduces the time also as the REST service or servlet takes more time when compared to this.

Records

This feature helps for POJO class and it makes the coding part easier.

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Future of Java

Java is used for web development, mobile development and desktop development. Cross-platform mobile apps are developed using the java platform with the help of SDK. Java standard libraries, Maven, JHipster, Guava, apache commons, hibernate-ORM, Junit, Mockito, log4j, google-gson, and SIf4j are the wide range of libraries available in java for making the complex part of coding easy. There are troubles in moving from the versions like 8 to 12 or 11.

Version change is a problem in the software industry with respect to investment and it demands changing the whole functionalities. Simplification for container management and version change is given more importance when thinking about the future of Java. Competition with JVM is initialized by other languages like kotlin and scala. Learn Java Course in Chennai to enter into the vast industry as many other technologies need a java background.

Powerful languages are needed to empower emerging technologies like Artificial intelligence and machine learning, and thus Java is demanded to build complicated large systems. The coding simplification, changes in the data objects and data types help the innovation of the new technologies. The research and production team java said that there would be a release every 6 months to widen the usage and bridge the gap in the issues with the language. Legacy technologies support emerging technologies Providing multiple ways of supporting business and technology.

There are many companies that are hiring Java developers. This Java Training in Chennai is designed for beginners and experienced Java programmers who want to learn how to program in the latest version of Java. Through this course, participants will learn to program in Java, how to construct classes, and how to create methods using this language by studying the basics of the language and its syntax.

Java Interview Questions and Answers

Before attending any Java interview it is important to know about the expectations of the company. Basic knowledge in Java programming along with the latest advancements in the core Java with Java SE8 like the lambda expressions, streams, Java data, and time API are key points to be remembered before attending the interview. Start answering the questions with the challenges and industry techniques of Java that are related to your previous profile. New features in Java 10, like the local-variable type interface, implementation of additional Unicode extensions of BCP 47 language tags, enable the hotspot VM and allocate the Java object heap on another device, the root certification authority certificates in the JDK. With our JAVA training in Chennai at FITA Academy, we help students to acquire holistic skills in Java that they will be able to apply in their careers.

It is important that you learn as much as you can about OOPS by taking part in this training program. JDBC skills and framework knowledge are important skills to evaluate a candidate’s skills.

Here are a few tips on how to crack a Java interview. There are two broad categories of tips, such as knowledge preparation and mental preparation, which can be broadly categorized into two categories.

Let’s take a closer look at the topic. The subconscious preparation is nothing more than the practical knowledge gained through constant practice of the Java concepts provided by FITA Academy’s Java Training in Chennai with mock interviews. So that they can get an idea of how to handle the interviews. In addition, they can plan the time taken for each question.

When was Java Launched?

Java was launched in 1995 and it has undergone various changes in the past 23 years. It is a high-level programming language that runs on Windows, Mac, and other variations of UNIX.

List out the platforms supported by Java?

Windows, Mac, and UNIX/Linux are some of the platforms that support Java. UNIX or Linux supports Ubuntu, Red Hat and Sun Solaris.

Which function in java makes it executable on other processors?

The compiler in the JAVA saves the file as an architectural-natural object file format. The architectural format aids the compiled code to be executable on various processors.With Java Training in Chennai at FITA Academy, students can have opportunities in multiple industries and can gain a deeper understanding of the scope of Java, as we are one of the best Java Training institutes in Chennai.

What is a class? What is the difference between the class and interface in Java?

A class is a template that is used to create the objects, define the data types, and methods. The class properties are mentioned in the class objects. An abstract class is used for the instance methods and it is used to implement a default behavior. An interface can declare different constants and implement a default behavior. An abstract class has only one member like private and protected whereas interface has all public members.

Where static variables, static methods, and static classes are used in Java?

Static things are used in Java with a block of code in any class indicating the virtual machine starts and the instances are created before itself.

How to handle the immutable object in Java?

The immutable objects are non-final but private. The immutable objects are changed using the constructor. The mutable object should be prevented from leaking any reference from that member.

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What is the use of a singleton class?

The singleton class is used to create an object, restrict the number to one and provide flexibility to create objects if the scenario changes.

Write the value of the float and double in Java?

The value of the float is 0.0f and the value of double is 0.0d.

What is Erasure?

If the runtime has no idea about types of generic objects like list<integer> then it is called Erasure. This is the JVM phenomenon for generic objects.

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How is the Dot operator used in Java?

The dot operator is used to access the variables, methods of the class objects and sub-packages from a package.

How objects are transformed into bytes in java?

Serialization is the process in Java where the objects are transformed into bytes in Java. Learn the best JAVA Training in Chennai at FITA Academy encourages the students to write generic and reusable codes in order to gain a more in-depth understanding of the coding language.

How to share objects securely in multi-threaded programming like java?

String class is used to share the objects as it is immutable.

Explain the terms Map, hash map, hashtable, and treemap in Java?

The map is an interface, Hashmap implements a map, hashmap is unsynchronized and supports null values and keys, a hash table is the same as the hash map but it is the synchronization version, treemap is similar to hash map but uses the tree to implement the map in the Java programming. Java Training with well-organized classes and good learning strategies will sharpen the programming skills of the learners.

What is the result of the hash code function?

A weak hash code function will result in frequent collisions in Hashmap and this leads to increased time to add an object.

Explain the importance of the getters and setters in Java?

The setters and getters use the interfaces and it will hide the implementation details. This process of hiding is helpful to make the member variables public in java.

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Is it possible to run the JVM with the same class and many packages? Explain.

Yes, it is possible because it loads the class one time only and the same package can be imported with the same class in Java.

What is the function of throw and throws in JAVA?

Throws are used for the declaration of the exception and throws are used to trigger the exception.

Describe the significance of the order in the statements for FileNotFoundException and IOException?

FileNotFoundException is inherited from IOException and the exception’s subclasses are caught first.

What is the difference between ready state and wait state in Java language?

The yield() method is used for the ready state and the Sleep() method is used for the wait state.

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Which class is used if the exact size of the array is not known?

Vector class is used to implement an array of objects which grows and it is used to know the exact size of the array.

Mention the bits used to represent Unicode, ASCII, UTF-16 and UTF-8 characters?

Unicode uses 16 bits, ASCII uses 7 bits, ASCII uses 8 bits, UTF-8 uses the 8 or 16 or 18-bit pattern, UTF-16 uses 16-bit and larger bit patterns to represent in JAVA programming.

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What is the use of the Applets?

The applet viewer or web browser is used to transform the small program from one computer to another computer.

How to write applications in different languages to serve different countries?

A locale is an object which is full of geographical, cultural and political information. This object helps with custom codes and conventions to write applications in different languages.

Describe the benefits of the java package?

The Java package is used for organizing projects which consist of multiple modules and they protect them from unauthorized access. Core JAVA Training in Chennai at FITA Academy is the best course for the beginner as core java is used in programming, automation and also to use the DevOps.

Is it necessary to import the java.lang package in the JVM?

No, it is loaded in the JVM by default.

Explain the terms public, static, void and main in the JAVA?

The public explains the access modifier and it specifies that it can be accessible by any class. Static is accessed without creating an instance, the void will not return any value, main is the method where the main execution occurs and it is the starting point for any application with a particular signature only, and the string is the parameter to be passed to the main method.

Justify the statement that Java is not a 100 percent object-oriented programming language?

Encapsulation, data hiding, inheritance, polymorphism, abstraction, predefined types, defined types, and all the operations are through the methods exposed at the objects shows that Java is an object-oriented programming language. The primitive data types such as boolean, byte, char, int, float, double, long, and short shows that java is not an object-oriented programming language.

What is the purpose of the wrapper classes?

The wrapper classes convert the primitives into reference types and every primitive data type is wrapped with a class.

What are the two types of constructors in JAVA?

Default constructor and parameterized constructor are the two types of constructor in Java.

List some of the differences between the array list and the vector?

Array List is not synchronized and vector is synchronized, Array list is fast and vector is slow, Array list increases the array size by 50 percent, vector is double the size of its array, array list does not define the increment size and vector defines the increment size, and array list can only use iterator and vector uses both enumeration and iterator except hash table. Learning J2EE Training in Chennai gives you the opportunity to gain an in-depth knowledge of Java and its many applications.

Bring out the differences between equals() and ==?

Equals() is used for the object class in java and it is used for equality between two objects. == is a binary operator that compares the primitives and objects.

List out the differences between heap and stack memory?

The stack memory use the one thread of execution, heap memory uses all parts of the application, stack memory cant access the other threads, objects stored in the heap are accessed globally, the system in stack is called as LIFO, the system in the heap is based on generation, stack exists until the end of the execution, heap is from the start to end, stack memory contains the primitive and reference variables, heap memory contains all the objects.

Mention some of the features in JAVA 9?

Java 9 REPL (Jshell), java 9 module system, factory methods for immutable list set Map and map entry, private methods in interfaces, reactive streams, and GC improvements are some of the features in the java9 which makes it a popular language.

Mention some of the features in Java 8?

The important features in Java 8 are interface changes with the default and static methods, functional interfaces and Lambda expressions, java stream API, and java date-time API. These features made JAVA a popular and high programming language. JAVA J2EE Training in Chennai provides high-class training with real-time projects to hone the technical skills of the learners.

Is it possible to write the java program in windows and run it in Mac OS?

Yes, it is possible to write a java program in windows and run it in Mac os as it is an independent platform which is open to any operating system.

Differentiate JDK and JVM?

JDK is for the development and JVM is to execute the java programs. JDK provides tools that are executable and helps for debugging. JVM is used to execute and it is machine-independent.

Differentiate JVM and JRE?

JVM is for implementation and JRE is for execution. JRE does not have the tools and it is for the installation.

Java, Javascript, C#, Python, C++, C, PHP, Swift, Go, Perl, PL/SQL, Scala, Objective C, Apex, R, MATLAB, Crystal, SAS, and scratch are the demand sequence of the programming languages around the world as per the Stackify Research. Thus the most in-demand language across the world is JAVA. So, learning JAVA is the best option to enter into the software industry. This Java training in chennai is the most widely learned course and it provides many online resources for beginners as well.

Describe the term static block?

Java static block is used to create static resources when the class is used and the memory in the java class Loader executes the group of statements in the Java static block.

Describe the term interface?

Interfaces are the hierarchy of code and it is a core part of the programming language. It is used in the JDK which consists of the tools required for the development. It is used in JDK, design patterns, frameworks, and tools. It provides a contract for the subclasses to implement and also it is used to achieve abstraction in java. Java class is used to implement multiple interfaces and mostly interfaces are used to implement the superclass.

Explain the abstract class in JAVA?

Classes and methods for the subclasses are created using the abstract class. The methods with implementation and the methods without body are created using the abstract class. An abstract class is created with the abstract keyword. To override the methods in the abstract class, to implement the abstract methods in the abstract class and it is the base for the subclasses in Java. This Java Course in Chennai at FITA Academy provides an overview of the advantages that Java offers, such as the huge number of libraries, graphics, sockets, and the multithreading capabilities.

Differentiate the abstract class and interface in JAVA?

The abstract class wants an abstract keyword to create a class and interface is used as a keyword for the interfaces. There is method implementation in the abstract class, whereas there is no method implementation in the abstract class. During implementation, only one abstract class is used and many interfaces can be used. An abstract class is run with the main() method and it is not possible to run an interface with main() interfaces.

Is it possible to extend an interface?

Yes, it is possible to extend an interface and that is the reason why we have multiple interfaces.

What is the new feature in java 8 for the interfaces?

After Java 8, the interfaces are implemented with the default method and it is easy to handle the diamond problem with multiple interfaces.

Describe the term marker interface?

Some functionalities in Java implement classes by Java and these functionalities need a market interface to force the implementation. The market interface is empty and it is used for functions like serialization and cloneable. Become part of the Best Java Training Institute in Chennai at FITA Academy to gain a comprehensive understanding of the pros and cons of the Java language and how to use it to its full potential.

Which feature in the java makes the conversion between primitive types and wrapper classes easy?

Java 5 autoboxing and unboxing make the primitive types and the wrapper classes’ conversion easy. JAVA Training in Chennai is the best course among all other courses as there is a huge demand for java programmers in the software industry.

Describe the term Enum in Java?

Enum has fields with a fixed set of constants and it is introduced in Java 1.5. Enum is used to create a direction such as EAST, WEST, NORTH, and SOUTH. Enum constants are static and final and used to create an enum type. Enum type is similar to the class in Java.

Our Java Training in Chennai at FITA Academy aims to provide you with all the skills and knowledge you need to enter into a development environment and work towards perfecting the product and gaining all the skills necessary to secure a position as an entry-level developer. FITA Academy teaches Java SE which clarifies Java Enterprise Software application development and the other environments of java such as web application development, mobile application development, java migration, java application development, java application testing, java custom application development, java desktop application development, java cloud application development, java CMS development, Java application development and Java application support.

Describe the term Java Annotation?

Java annotations are the Metadata about the program and it is embedded in the program itself. Java annotations provide information about the code and it can be parsed by the annotation parsing tool or by the computer. Some of the annotations in Java are @Override, @Depreciated and @Supresswarnings.

Describe the term Java reflection API in Java?

The run time behavior of a java application is inspected and modified with the Java Reflection API. The reflection API violates the rules of access modifier and breaks the design patterns such as singleton pattern by invoking the private constructor. Reflection helps for the processing of the frameworks like spring hibernate or tomcat. There are many web applications, desktop applications, and mobile applications that use Java that are available today, and this Java Course in Chennai at FITA Academy is the best way to enter into the software industry.

What is composition in Java?

The composition is used to reuse the code and it is a design technique to implement a relationship in classes. Java composition uses the instance variables and other objects. The visibility of other objects is controlled by using the java composition. The objects needed are reused and controlled by using composition in Java. There are so many online materials available for Java that give practical knowledge to the students which are highly needed to clear the interview in the top companies.

Compare the benefits of composition and inheritance?

In the composition method change in the superclass might affect the subclass. If the method in the subclass and the method in the superclass are different then there are chances for the compilation error but in the composition, this will not happen. Inheritance is designed with a model that exposes all the superclass methods and variables to the client. There is no control and it is not possible to design the superclass. The inheritance binds the classes of compile-time in the run time binding under composition. When invocating the methods the composition provides flexibility. The best Java Training in Chennai at FITA Academy provides 100% placement support, keeps the students up-to-date on placements, and the students’ reviews show that students are placed immediately in top companies.

Mention the sorting methodology in Java?

In a collection, a comparable interface is used to sort the custom objects. The compareTo is the method used for the sorting method in the Comparable interface. If there is a specification in the sorting methodology then comparator instances are used. With our Java training in Chennai, we know about the struggles that students face while understanding any programming language and by joining the course, they get the confidence to take on the interview as they receive the desired output from the input they put in.

Explain the inner class in Java?

Inner class accesses the variables and methods from the outer class and they are called as the nested classes. Inner classes are non-static nested classes. Static variables are not there in the inner classes as it is associated with the instances.

Explain the term anonymous inner class in Java?

Anonymous inner class is a local inner class without a name. It is defined with a single statement and it always extends a class and implements an interface. The Java Training Institute in Chennai is widespread throughout the entire city of Chennai to facilitate students’ learning and to enable them to learn the course within a given period of time in order to attend to other tasks.

Describe the term class loader in Java?

The byte code program in the memory is loaded into the Java class loader to access any class. To access any class the class loader is created and it is extended to the ClassLoader class. The method used in the class loader is the loaded Class (String name) method.

Mention the three types of built-in class loaders in Java?

Bootstrap class loader, extensions class loader, and system class loader are the three types of the class loader in Java. Join the Core Java Training in Chennai at FITA Academy to gain the basic knowledge which is the base to learn other technologies evolving now.

Explain the term bootstrap class loader?

The bootstrap class loader is used to load the rt.jar and other core classes. Bootstrap class is used to load the internal classes.

Explain the extension class loader in Java?

Extensions class loader is used to load the classes from the JDK extensions directory.

Describe the System class loader in Java?

If -cp or -classpath command-line options are used to load the classes from the current classpath to invoke a program.

Describe the term ternary operator in Java?

The three operands are the conditional operator used in the Java ternary operator. This is the replacement for the if-then-else statement and the ternary operator is the if-else condition. This Java Course in Chennai at FITA Academy will prepare you for making a successful career in the software industry, which offers a handsome salary package on completion.

What is the function of the super keyword?

The superclass method needs a super keyword to access the class. In the constructor method, the first statement is the super keyword. It is used to invoke the SuperClass in the constructor.

When the break or continue statement is used in Java?

Break statement is used in the switch case and continue statement is used to skip the current iteration of for, while or do while in the loop and this is used with a label to the current iteration.

Describe the term this keyword?

The reference to the current object is mentioned with the keyword. This is mostly done when the object variables are used. This J2EE Training in Chennai will give you an insight into how the big companies operate and how they handle the big projects the companies have on the go.

Which file supports more than one java class in Java?

.java files support more than one java class.

Explain error handling in stored procedures?

The error codes are returned by the stored procedure and if it fails to return the error code then the catching SQL exception will resort to the error code.

Which element is used to perform the indexed search in a list of objects?

An array list is used to perform the indexed search in a list of objects. The JVM makes java as a secure language

What is the function of the file class?

The file class is used to access the files and directories from a local system.

What is the process or the life cycle of applets?

Initialization, starting, stopping, destroying and painting are the process or life cycle of applets. Taking the Java Course in Chennai at FITA Academy provides quality education and clears the doubts of the students to turn them into industry-ready developers.

Which method is used in the Applet class to load an image?

The get Image is used to load an image in the Applet class.

What is the OOPS concept in Java which made it a robust language?

Abstraction, encapsulation, polymorphism, inheritance, association, aggregation, and composition are the OOPs concepts in java which says about the objects and the operations. The OOPS concept makes the code as reusable code with minor changes.

What is the difference between Java and JVM in java?

Java is an independent platform and it works with the OOPS concept. Java code is used anywhere with minor changes which makes Java platform-independent. JVM is not platform-independent and JVM differs as per the usage of the operating system.

Differentiate JDK and JVM in java?

JDK is the tool used for development and execution. JVM is used only for the execution. The JAVA training in Chennai is the right choice for those looking to explore an array of different uses for Java in big companies, such as banks and insurance companies.

Differentiate JVM and JRE?

JRE is the tool used for the execution. JRE uses JVM, other java classes and other java binaries to execute the java program. To execute the java programs it is mandatory to install the JRE tool. Development and execution are taken care of by different types of tools in the JAVA.

Which element in java supports the multiple inheritance?

Interfaces in java support multiple inheritance. The interface takes care of the methods and the implementation class takes care of the implementation. So, it is possible to use multiple inheritance in java. By knowing about the demand in the global market and training candidates to match the job market.

Differentiate path and classpath variables?

The path is used to add the directory location to locate the executables in Java. The classpath is used to locate the class and the classpath location is added to the classpath variable. The classpath location can be a directory, ZIP files, and JAR files. The path is used to locate the executables and classpath is used to locate the class files. Java is the renowned technology to learn which has a good number of followers all over the world.

Explain the main method in Java?

Java’s main method is accessible during runtime without initializing the class. Java’s main method is public and static to pass the runtime arguments to java. The input parameter is used to pass the runtime arguments to java.

Differentiate the term overload and override in Java?

The name is the same but the arguments are different for more than one method then it is called overloading in Java. If two methods have the same signature then it is called overriding in Java. The override annotation is used in the child class to make sure whether the parent class is changed. The parent class and the child class have the same signature. We, as a Java Training Institute in Chennai, provide a course with updates and customizations that are based on the current standards of the industry to assure a quality learning experience.

Is it possible to have multiple public classes in a java source file?

No, it is not possible to have multiple source files in the java source file. One public class is allowed in Java and the other multiple classes are not public

Explain the term Java package in java and by default which package is imported?

The java classes are grouped as per the functionality of modules and this mechanism is named as java package. No need to import any class from the package and the java.lang package is imported by default.

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Mention the different types of access modifiers in Java?

The different types of access modifiers are public, private, protected and default access modifiers in Java.

When final key work is used in Java?

To make sure that the class has ended and can’t extend the class the final keyword is used. The child class can’t override the final keyword. Since good Java programmers are produced by good Java Training Institutes in Chennai, the institutes provide good counseling based on the individual’s qualifications.

When a static keyword is used in Java?

The static keyword is used in Java to make it global. A static keyword can be used with class-level variables and methods. A static method invokes the static methods and accepts the static variables.

Differentiate finally and finalize in Java?

Finally a block is used to execute the code and it is used along with the try-catch block. To release the resources in the try block the final block is used. Finalize () is used to override in the class and it is the special method in Java. When the garbage is collected then this method is called and the resources are released. With Java Classes in Chennai, students are provided with practical oriented training along with great patience in order to clear their doubts.

Is it possible to declare a class as static?

Yes, it is possible to declare an inner class as static but it is not possible to declare a high-level class as static. The declared inner class is called a static nested class. The classic inner class is nested for packaging convenience and it is the same as any other class.

Explain the term static import?

If the method or class from another class is used then it is imported to the class with the class name. This is known as a static import. If the static import is overused in the program then it will make the program as unreadable or unmaintainable.

Explain the resource management in Java 7?

The try with resources statement in java 7 is the automatic resource management system. Earlier the resources are closed with finally block and try-catch statements. There was a memory leak in this system and hence the try with resources statement is used to close if it gets finished.

Explain multi-catch blocks in JAVA?

The multi-catch block is used to catch multiple blocks and it is the new improvement in java 7. Every catch block has a similar code in the multi-catch block and it makes the code shorter and cleaner. Pipe (|) is used to separate the exception and (ex) is used to finalize the exception. With our Java Classes in Chennai we work with the students to create the best learning experience and bring a change in their lives by utilizing the knowledge of Java.

What is new in Java 8 regarding the interface?

Interfaces are generally extended and it is not possible to implement the interface. The new features in Java 8 are that it has a default method and it is present in multiple interfaces. The implementation method is provided in the implementation class in Java.Core Java Training in Chennai teaches the Java language from the basics for the students from the IT background and also for the students from the non-IT background.

Explain the Java reflection API?

The reflection API inspects the java application during the run time. The java class, interface, enum, and their methods are inspected. Reflection API is highly used in the java frameworks.

What is the use of using composition in Java?

Java composition helps to reuse the code. The visibility of the other objects is controlled and it is easy to reuse only the object which we need by using the composition in Java. There are several advantages of taking the best JAVA training in Chennai in order to meet the challenges that arise in the field of software development.

How to sort objects in Java?

To sort custom objects in Java are sorted using the comparable interface and this leads to the default way to custom objects collection. If there are criteria in sorting the information then comparator instances are created to sort the data.

Explain about the default constructor?

If there is no constructor for the class and no-argument constructor for the class then it is known as default constructor. This constructor is created by default by the java class. If the programmer defines other constructors then this is not created by default by Java class.

Explain the term deserialization in Java?

The stream data created through serialization is converted into an object and this process is called deserialization.

Explain the process to run the JAR file in Java?

Main class entry is required to run a jar file in the jar manifest file. The java command executes the class and the entry point is the main class.

What is the purpose of an instance of a keyword?

An instance of a keyword is used to check the objects. To know about which class the object belongs to, the instance of the keyword is used. Get expert knowledge of Java programming by enrolling in the Java Course.

Which method is used to test whether a language is passing by reference or pass by value?

The swap method is used to check whether a language is passed by reference or pass by value.

Where does the Java compiler is stored in JAVA?

Java compiler is not stored in JRE or JVM but it is stored in JDK.

What are the benefits of the collections frameworks?

The effort towards the development is reduced, code quality is enhanced as the collections framework classes are already tested, the maintenance cost is reduced, and reusability are some of the benefits of the collections framework. Collections are used in every programming language with the usage of generics and concurrent collection classes.

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Also Read: Java Interview Questions and Answers

Java Tutorial

Java is a well-known programming language in the field of Information Technology is Java Training in Chennai, which was designed for the constant flow of code on any machine. This was considered a treasure due to its wide usage on any platform or architecture.

Java is one of the popular programming languages that are class-based and object-oriented. Java is owned by the Oracle company and it functions in 3 billion devices around the world. Java will be safe for many years with high demand for Java developers in top MNC. Java was developed by James Gosling at Sun Microsystems and was launched in 1995. It is now acquired by Oracle Corporation. This language has similar syntax from C and C++.

Here we discuss the features of Java programming in brief as listed below

• Java is a platform-independent programming language
• Java is an Object-oriented language
• Java is very fast to use
• Java provides features for security
• Java is a huge standard library

The latest edition of Java programming is Java SE 8. Many configurations are built to suit different platforms. The new version J2 is called Java SE, Java EE and Java ME accordingly.

Here we require a Pentium 200 MHz computer with RAM of 64 MB. The following software required for these is Windows XP or Win 7 or Win 8 or Linux 7.1, Java JDK 8, Microsoft Notepad or any text editor. The basic concepts followed in Java are Inheritance, Polymorphism, Abstraction, Classes, Objects, Instance, Method.

James Gosling introduced Java in June 1991which was known as Oak named after an oak tree outside Gosling’s office and got its name changed as of Java over a period. Thus, the journey of Oak becoming known as Java ends here.

Java was not an open-source initially, it was under the influence of GNU General Public License, and Sun released the open-source version of Java in November 2006. Also, by May 2007 it was completely coded in a free language. Our Java Training in Chennai at FITA Academy provides a solid platform to launch your career in Java.

Also Read: Java Tutorial

The evolution of Java till date is listed below:

• JDK Beta (1995)
• JDK 1.0 (Jan 1996)
• JDK 1.1 (Feb 1997)
• J2SE 1.2 (Dec 1998)
• J2SE 1.3 ( May 2000)
• J2SE 1.4 (Feb 2002)
• J2SE 5.0(Sep 2004)
• Java SE 6 (Dec 2006)
• Java SE 7(July 2011)
• Java SE 8 (Mar 2014)
• Java SE 9(Sep 2017)
• Java SE 10(Mar 2018)
• Java SE 11(Sep 2018)
• Java SE 12 (Mar 2019)

Tomcat is considered the desirable application server for the open-source programming language-Java. For the usage of Java in any web browser, it is necessary to have a Java plug-in.

Java has unlocked its doors for interaction with other companies to extend the Java community. With the back-to-back, the release of versions in Java its expectation for lots of changes shortly. Thus, Java Training is very popular in the market to become successful as a programmer. FITA Academy is ranked as the best Java Training Institute in Chennai.

Java Training in Chennai- Outline

There are various training for plenty of programming languages present in the market but Java remains at the top of the list. Sun Microsystems developed it in 1995. James Gosling is the one behind its innovation. The recent update released by them for Java is Java SE 11(18.9 LTS) launched in September 2018.

Patterns with Predicate Utility Methods, Optional.isEmpty, Epsilon Garbage Collector are some of the noted features of Java SE 11. Soon after the launch of Java, its popularity made openings for multiple configurations for different platforms like J2EE, J2ME and the list continues.

Its preference amidst developers keeps on increasing as programs once written in Java can be executed irrespective of the platform it is implemented in.

How is Java related to C and C++

The syntax of Java Course is derived from C and the object model is derived from C++. The programmers who are well versed with C/C++ language will be easily learning Java. Moreover, Java developers do not create a new thing but modify the already existing. As many similarities are prevailing between Java and C++, Java is known as the Internet version of C++. Java was not created for the replacement of C++ whereas its creation is to support getting solution issues, which arise in C++. This is the reason why the Java Course in Chennai is preferred over other courses.

How is Java related to C#

C# The language was developed by Microsoft, which has similar features with Java. Both of them are using the general style syntax. We at FITA Academy are considered to be one of the finest Java Training Institutes in Chennai.

Contribution of Java to the Internet

Applet

An Applet is one of the contributions of Java, which reframed the networked program across the world. It is designed for transmission over the Internet and executed by the web browser, which is compatible with Java. If the user clicks on anything, which consists of an Applet, then it will download the applet automatically.

Applet runs within a web browser, which works at the client-side. It is embedded in an HTML page with the use of OBJECT or APPLET tag.

Points to Remember

• Every applet is a sub-classes of the java.applet.Applet class.
• They have never been a stand-alone program as they run inside an applet viewer or a web browser. Moreover, JDK enables a standard viewing tool for an applet, namely applet viewer.
• For an applet window, the output is not done using System.out.println() whereas done using AWT methodologies.
• The execution of the applet at the main() method is not used in the beginning.
• The various methods are:
• init(): This is the first method that is called for the initialization of variables. Moreover, it is called only once during run time.
• start(): It is the next step after init() and also called to restart an applet once it is stopped.
• paint(): The paint( ) is called every time an AWT-based output of an applet needs to be redrawn, which can occur for many reasons. For instance, the window where the applet is running may be overwritten by another window. Or else even the applet window might be minimized and later on restored.
• In another instance, it is also called when the execution of the applet begins.
• stop(): This method is called when an HTML document has been left by the web browser. When stop( )is called, the applet is under execution.
• destroy(): This is called when the environment is the key factor in determining which applet is needed to be removed completely from memory.

Features of Applets over HTML

• It displays dynamic web pages of any web application.
• It plays sound files.
• Plays animations
• Displays various documents

It made numerous changes in the world of the Internet as the objects were able to progress freely. The 2 categories of information that are transmitted between the server and client namely passive and dynamic information.

Let us get into the topic of what makes Java more prominent

• Complex-free: Java was designed for the developers to write programs with ease. It is considered easier than C++ as there is an automatic memory allocated.
• Multi-threaded: The capacity of a program to perform many tasks simultaneously within the program.
• Object-Oriented: Allows the user in the creation of modular programs along with reusable code.
• Distributed: Designed to make allocated computing simple along with the networking capability.
• Platform-Independent: Moving it from one system to another can be done with much ease.
• Secure: The Java language is highly secure when compared with other programming languages.
• Robust: It helps in eliminating error due to the presence of time error check along with runtime check.
• StackAllocation: This helps the user to store data with ease.
• High Performance: Java set up high performance due to the presence of just-in-time compilers.

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History of Java

The project Java was initiated in the year 1991 by James Gosling, which was originally called “Oak” named after the Oaktree, which stood in the entrance of James’s office. Then it was renamed as Green and after a long time, it got the name ‘Java’. Its public implementation happened in the year of 1995 by Sun Microsoft.

After this, it was made open source in 2006 under the terms of GPL. Finally, on May 8th of 2007, the process of making it code free was accomplished. Our Java Classes in Chennai is a great opportunity for both recent graduates and IT professionals.

Tools in need

There are certain specifications to be fulfilled for running Java in your system. As Java Training is fetching more students it is indeed to have the specific hardware and software to work on Java. They are specified below:

• Pentium 200-MHzComputerwith64 MB of RAM
• Linux 7.1 or Windows xp/7/8 operating system
• Java JDK 8
• Microsoft Notepad
• Java-Syntax

A program in Java is a cluster of an object, which communicates by calling upon each other’s method. Let us concentrate on the various components present in Java syntax:

• Class– It is the blueprint, which describes the state of the object supported by it.
• Object– They have various states along with different behaviors.
• Methods– It has always been a behavior.
• Instance variables– Every object has a unique set of it.

Java Identifiers

Every component present in Java requires names. It may be used for classes, methods, and variables that are known as identifiers. There are certain basic things to be remembered:

• The identifier should begin with the alphabet, underscore or currency character.
• They are case sensitive.
• The rest of the characters should be a combination of characters.
• The keyword should not be used as an identifier.

Java Modifiers

It is indeed necessary to modify methods, class and other components. The modifiers are classified into two:

• Non-access modifier: abstract, final
• Access modifier: public, default

Java Variables

There are various Java variables:

• Local Variables
• Instance Variables (Non-static Variables)
• Class Variables (Static Variables)
• Java Enums

Java 5.0 consists of Enums, which restricts variables to have a single predefined value form the given list. Enums are used for the reduction of bugs in the code.

Java Keywords

There are certain reserved words that cannot be used as variable or constant namely: abstract, assert, Boolean,break, byte, case, catch, char, class,continue,const, default, else, double, float, final, do, enum, extends, if, for, implements, goto, int, import, interface, instance, native, long, package, new, public, short, private, return,strictfp, synchronized, throw, switch, static, transient, volatile, void, try, throws.

Comments in Java

It supports both single and multi-line comments, which is similar to C and C++.

Inheritance

The specialty of Java classes can be derived from classes.

Interfaces

It is the arrangement between objects for the method to communicate. It plays a crucial role in inheritance.

Java – objects & Classes

Java is an object-oriented language which includes:

• Inheritance
• Polymorphism
• Abstraction
• Encapsulation
• Objects
• Instance
• Class
• Object
• Classes present in Java

There are 3 classes present in Java:

A class can contain any of the following variable types.

• Local variables: These variables are defined inside methods, constructors or blocks.
• Instance variables: variables are defined within a class and outside any method.
• Class variables: These are declared within a class, outside the method, with the static keyword.

How to Use a Singleton Class?

Its work is to control object creation, which in turn limits the number of objects to one. As there is a singleton instance, its occurrence will be restricted to one per class. We offer you our Java classes in Chennai that can help you gain a better understanding of the language.

How to Create an Object?

A class in Java administers the blueprints for any objects. The steps involved in the creation of an object are:

• Declaration: A variable is declared with a variable name and an object type.
• Instantiation: The ‘new’ keyword is used for the creation of an object.
• Initialization: The ‘new’ keyword is pursued by a call to a constructor.

Operators

The various operators available in Java are:

• Bitwise Operators– &(bitwise and), ~ (bitwise complement), | (bitwise or), >> (right shift), << (left shift), ^ (bitwise XOR), >>> (zero fill right shift).
• Arithmetic Operators– + (Addition), * (Multiplication), % (Modulus), – (Subtraction), / (Division), ++ (Increment)
• Assignment Operators – =, *=, +=, %=, |=
• Logical Operators – || (logical or), && (logical and),! (logical not)
• Relational Operators– == (equal to), < (less than), != (not equal to), <= (less than or equal to)

Misc Operators-Conditional Operator

Application

There are over 3 billion devices, which run on Javascript. Few among them are listed below:

• Web based Applications such as amazon.in, etc.
• Mobile
• Enterprise based Applications like banking applications.
• Robotics
• Desktop-based applications like media player, acrobat reader, etc.
• Embedded System
• Smart Card
• Games

Therefore, by taking part in Java Training in Chennai at FITA Academy, you will be able to successfully enter the IT industry in a great way.

Types Of Java Applications

There are four types of applications, which can be generated with the use of Java programming:

1) Web Application

An application that can be executed on the server-side along with the creation of the dynamic page is known as a web application. Servlet, Struts, JSF, Spring, etc. are some of the technologies which are used in the creation of web applications.

2) Standalone Application

Standalone applications are also known as window-based or desktop applications are traditional software, which is indeed necessary to be installed on every machine. There are various examples for standalone applications such as antivirus, Media player, etc. AWT and Swing are deployed in the creation of Java.

3) Enterprise Application

An application that is assigned in nature, such as banking applications, etc. is called enterprise application. It has many benefits of load balancing, high-level security, and clustering. Enterprise Java Beans is deployed for the creation of enterprise applications.

4) Mobile Application

An application that is created for mobile devices is known as a mobile application. These days, Java ME and Android are used for the creation of various mobile applications.

Java Platforms

The students with a considerable amount of knowledge in Java Training have good openings in the market. Java platforms are classified into:

1) Java Standard Edition

Java SE is a Java programming platform that consists of Java programming APIs like java.net java.lang, java.io, java.math, java.util, java.sql, etc. It has basic topics such as OOPs, Reflection, Regex, Exception, String, Inner classes, I/O Stream, Networking, AWT, Multithreading, Swing, Collection, etc.

2) Java Enterprise Edition

J2EE is an enterprise platform that is primarily used for the development of enterprise and web applications. It is erected on top of the Java SE platform. It also has topics such as Servlet, Web Services, EJB, JSP, JPA, etc.

3) Java Micro Edition

JME is a micro platform that is used to develop various mobile applications.

4) JavaFX

It is used to develop an affluent internet application, which makes use of light-weight user interface API.

Difference Between JDK, JRE, And JVM

JVM

Java Virtual Machine is an abstract machine and is called a virtual machine as its existence is not physical. Moreover, it is a blueprint, which provides a runtime environment for the execution of Java bytecode. Also, the execution of programs written in other languages is possible.

All three JVM, JDK, and JRE are platform reliant due to the composition of all the unique operating systems. JVMs are available and not constrained to any one hardware or software.

The tasks performed by JVM are

• Supply’s runtime environment
• Loading of code
• Verifying the code
• Execution of code

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What is JVM

JVM is a specification in which the working of Java Virtual Machine is specified. Moreover, the implementation provider is not dependent on the choice of the algorithm whose implementation is provided by Oracle.

JVM describes the following

• Register set
• Fatal error reporting
• Memory area
• Class file format
• Garbage-collected heap
• Java Variables

A variable is a container that possesses the value when the java program has been executed. A variable is accredited with a datatype.

Variable is a name given for memory location, which is classified into three types: instance, local, and static. Join our Core Java Training in Chennai and get the opportunity to enter the It sector.

There are two types of data types in Java: primitive and non-primitive.

Variable

• It is the fundamental unit of storage in any program.
• The value that is stored in a variable can be altered during the process of the program execution.
• A variable is just a name given to a memory location.
• In Java, every variable must be declared before being put into use.
• Variable has always been a combination of vary + able.

Data Types

• Primitive data types: Primitive data types consist of boolean, byte, double, short, int, char, long and float.
• Non-primitive data types: This include Classes, Interfaces, along with Arrays.
• Java Primitive Data Types:In Java language, basic data types are the building blocks of data manipulation. The following are the fundamental data types that are available in the Java language.

They are classified into 8 types of primitive data types:

• byte data type
• char data type
• short data type
• Boolean data type
• float data type
• int data type
• long data type
• double data type
• Boolean Data Type

The Boolean data type is used for the storage of only two possible values either true or false. This data type is used for tracking of true/false conditions in simple flags. Join our Java Training in Chennai today if you want to become smarter in programming.

Byte Data Type

The byte data type also belongs to primitive data type, which has an 8-bit signed two’s complement integers. The value-range of byte datatype lies between -128 to 127 with the minimum value -128 and the maximum value 127 with a default value is 0.

This is used to save memory in large arrays in which the memory savings is indeed necessary as saving space as a byte is 4 times smaller than an integer. This can be used for the replacement of the “int” data type.

Short Data Type

It is a 16-bit signed two’s complement integer who’s value-range lies amid -32,768 to 32,767 considering minimum value as -32,768 and the maximum value is 32,767. The default value in the short data type is also 0.

It is similar to the byte data type to memory saving. Moreover, it is 2 times smaller when compared with an integer.

Int Data Type

This data type is a 32-bit signed two’s complement integer with a value ranging between – 2,147,483,648 to 2,147,483,647. The minimum value is considered to be – 2,147,483,648 and maximum value as 2,147,483,647 with a default value as 0.

This is broadly used as the default data type for the integral values except if there is no problem for the memory.

Long Data Type

This is a 64-bit two’s complement integer and consists of value-ranging between -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Long datatype has minimum value as – 9,223,372,036,854,775,808 and with the maximum value as 9,223,372,036,854,775,807.

The default value is considered to be 0. This data type is deployed when there is a need for a range of values that are provided more than by int.

Float Data Type

This data type is a single-precision 32-bit floating point with a value range that is considered unlimited. It is favored for the usage of a float instead of using double if there is a need to save memory in large arrays of floating-point numbers. This data type should never be used for precise values such as currency with a default value as 0.0F.

Double Data Type

This is a double-precision 64-bit IEEE 754 floating-point with an unlimited range of value. This data type is normally used for decimal values similar to floats. The double data type should never be used for precise values, like currency with a default value of 0.0d.

Java If-else Statement

Java if statement is deployed to test the condition and checks the boolean condition of true or false.

The types of if statement in java are:

• if statement
• if-else-if ladder
• if-else statement
• nested if statement
• Java if Statement

It runs the if block if the condition is true.

Syntax:

if(condition){

//code to be executed

}

The Java if-else statement executes the if block, when the condition is true otherwise else block is executed.

Syntax:S

if(condition){

//code if the condition is true

}else{

//code if the condition is false

}

Java Nested If Statement

The nested if statement serves the if block within another if block. In this, the inner if block condition runs only when the outer if block condition is true.

Java Switch Statement

The Java switch statement executes only one statement from multiple conditions. The switch statement works with long, byte, short, int, enum types, String. In other words, the switch statement is deployed for testing the equality of variables against multiple values.

Loops Available In Java

In the various programming languages available, loops are used to execute a set of instructions repeatedly when some of the conditions are true. They are classified into three types:

• while loop
• for loop
• do-while loop

Java For Loop

In Java, for loop is used for the iteration of a part of the program many times. If the number of iterations is steady, it is recommended for the usage of the loop.

They are:

• Labeled For Loop
• Simple For Loop
• Enhanced For Loop
• Java Simple For Loop

A simple loop is the same as C or C++. Initialization of variable, condition check, and increment or decrement value can be done. It has four parts:

• Initialization: It is the initial condition that is executed when the loop begins. Here, we can initialize the variable, or we can use an already initialized variable. It is an optional condition.
• Condition: It is the next condition that is executed every time to test the condition of any loop and continues the execution process until the condition is false. It must return a boolean value either true or false.
• Statement: The statement of the loop is executed each time until the second condition is false.
• Increment/Decrement: The variable value can be incremented or decremented, which is an optional condition.

Java For-Each Loop

The for-each loop is used to traverse collections in java. And is easier to implement than simple for a loop as there is no need to increment the value along with the use of subscript notation. It works on an element basis and not on the index.

Syntax:

for(Type var:array){

//code to be executed

}

Java Labeled For Loop

We can make use of labels before the for loop. It is indeed useful if we have nested for loop, with its help we can break/continue specifically for a loop.

Syntax:

labelname:

for(initialization;condition;incr/decr){

//code to be executed

}

Java Infinitive For Loop

If you use two semicolons ;; in the for loop, it will be infinite for loop.

Syntax:

for(;;){

//code to be executed

}

Java While Loop

The Java while loop is used to iterate a part of the program several times. If the number of iterations is not fixed, it is recommended to use a while loop.

Syntax:

while(condition){

//code to be executed

}

Java Infinite While Loop

If you pass true in the while loop, it will be infinite while loop.

Syntax:

while(true){

//code to be executed

}

Java Do-While Loop

The Java do-while loop is used to iterate a part of the program several times. If the number of iterations is not fixed and you must have to execute the loop at least once, it is recommended to use the do-while loop.

The Java do-while loop is run at least once because the condition is checked after the loop body.

Syntax:

do{

//code to be executed

}while(condition);

Java Infinitive Do-While Loop

If you pass true in the\ do-while loop, it will be an infinitive do-while loop.

Syntax:

do{

//code to be executed

}while(true);

Java Break Statement

When a break statement is encountered within a loop, the loop is immediately terminated and program control resumes at the next statement following the loop.

The Java break is used to break the loop or the switch statement. It breaks the current flow of the program at a specified condition. In the case of the inner loop, it breaks the inner loop alone.

We can use Java break statements in all types of loops such as for loop, while loop and do-while loop.

Syntax:

jump-statement;

break;

Continue Statement

The continue statement is used in a loop control structure when you need to jump to the next iteration of the loop immediately. It can be used with for loop or while loop.

The Java continue statement is used to continue the loop. It continues the current flow of the program and skips the remaining code at a specified condition. In the case of the inner loop, it continues the inner loop.

We can use Java continue statements in all the types of loops like for loop, while loop and do-while loop.

Syntax:

jump-statement;

Continue;

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Java Operators

It is used to operate on variables and values. These two terms include operand and operator.

Example

int x=100 + 50

* Values are the operand

*The operation performed between two operands is defined as an operator.

Multidimensional Arrays

If an array contains one or more arrays it is called a multidimensional array. To create a two-dimensional array add each array to itself of curly braces.

Example

int[ ][ ] x={{1,2,3},{5,6,7}};

X is an array with two arrays with its elements

To access the elements of the X array, set the two indexes:

One for array and one for the elements inside that array.

Example

int [ ][ ] x={{1,2,3},{5,6,7}};

int y=x[1][2];

System.out.println(y);

RESULT::7

We can also use a for loop inside the for loop to access the elements of a two-dimensional.

Example

int[ ][ ] x={{1,2,3},{5,6,7}};

for(int i=0;i<x.length;++i)

{for(int j=0;j<x[i].length;++j)

{system.out.println(x[i][j]);

}}

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Modifier Type

Modifiers are the keywords that can be added to those definitions, which are intended to be changed for their meanings. Java is a language that has a wide range of modifiers, inclusive of the following –

• Java Access modifiers
• Non Access Modifiers

For making use of a modifier, the keyword is included in the definition of a class, variable, or method. There will be plenty of scope for you to learn Java through our Java Training in Chennai.

Access Control Modifiers

Java has several access modifiers to set access levels for various classes, variables, methods, and constructors. There are four access levels-

Those are visible to the package, the default. No modifiers are required.

• Visible to the class alone (private).
• Visible to package and all the subclasses (protected).
• Visible to the entire world (public).

Character Class

We come across many situations where the need for objects is done instead of primitive data types. To achieve this, Java gives a wrapper class Character for the primitive data type char.

The Character class normally wraps the value of all the primitive type char into an object. Thus, an object of type Character can consist of a single field whose type is char.

All the fields, constructors, and methods of the class Character that are specified by the Unicode Data file and are a part of the Unicode Character Database, which is maintained by the Unicode Consortium.

Java in general makes use of the UTF-16 encoding method to represent the various char arrays in the String or String Buffer.

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Escape Sequences

When any character is preceded by a backslash it is referred to as an escape sequence and has specific meaning to the compiler.

String Class

With the help of various methods, it is simple to perform various operations like trimming, replacing, converting, comparing, and concatenating on the string.

It is a powerful concept as everything is considered as a string, while the submission can be done in window, web-based or mobile-based applications.

Creating Strings

Whenever there is a presence of string literal in the code, the compiler enables the creation of a String object with its value in this case for instance, “Hello world!’.

It is possible to create String objects by deploying any new keyword along with a constructor. The String class consists of 11 constructors that enable the user to provide the initial value for the string with the use of different sources like an array of characters.FITA Academy provides core Java training in Chennai for those who are interested in learning more about Java.

String Length

Methods used to obtain information regarding an object is referred to as the accessor method, which can be used with strings is the length() method that returns the number of characters present in the string object.

Date and Time

Java is a proficient language that provides the Date class accessible in the java.util package and this encapsulates the current date and time.

Getting Current Date and Time

This is a simple method to get the current date and time. You can make use of simple Date object with the use of toString() method to print the current date and time

Sleeping for a While

The user can sleep for any duration of time from one millisecond to the lifetime of the computer, which is an added advantage.

GregorianCalendar Class

This is a definite implementation of a Calendar class, which implements a normal Gregorian calendar.

The getInstance( ) method of this Calendar returns a GregorianCalendar boot up with the current date along with time in default locale and time zone. It defines both AD and BC fields, which represent two eras defined by the Gregorian calendar.

Regular Expression

Regular Expression is also known as Java Regex is an API used to define a pattern for initiating the search or manipulation of strings. This is a special sequence of characters, which aids the user to match other strings or sets of strings with the usage of a specialized syntax held in any pattern.

Its usage is widely done for defining the constraint on strings like password and email validation. After gaining knowledge in Java regex, it will be simple for you to test regular expressions by deploying Java Regex Tester Tool.

A java.util.regex package is provided by Java to match the pattern with regular expressions, which is similar to the Pearl programming language. This package consists of three classes:

• Pattern Class − This provides no public constructors. To create a pattern, the user must invoke its public static compile() methods. It is a compiled version of a regular expression.
• Matcher Class − It is the engine that interprets the pattern and also performs public constructors. The user can obtain a Matcher object by just invoking the matcher() method on a Pattern object.

This implements the MatchResult interface. The different methods available in the Matcher Class are:

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Index methods

• • Study methods
  • Replacement methods
  • PatternSyntaxException − This is an unchecked exception, which indicates a syntax error in a regular expression pattern.

Capturing Groups

Capturing groups is a way to treat multiple characters as a single unit. They are created by placing the characters to be grouped inside a set of parentheses. For example, the regular expression (dog) creates a single group containing the letters “d”, “o”, and “g”.

Java – Methods

It is a collection of statements, which are grouped to operate. When the user calls the System.out.println()method, the system executes several statements for displaying a message on the console.

A method is nothing but a block of code that only runs when it is called by the user.

The user can pass data, called parameters, into a method.

Methods are deployed to perform specific actions, called functions.

Creating Method

A method is needed to be declared within a class. Moreover, it is defined with the name of the method, being followed by parentheses ().

Method Calling

For the deployment of a method, it is indeed necessary to be called. This can be done in two different ways: method returns a value or returns nothing.

To call a method in Java, the user needs to write the method’s name succeeded by two parentheses () and a semicolon;

The process of method calls can be done with ease. When a program invokes any method, the control of the program gets transferred to the called method, which in turn returns control to the caller in two conditions, when − it reaches the method ending closing brace. the return statement is executed.

Method Parameters

The information can be passed to functions as a parameter that is specified after the method name, within the parentheses. The user can also add as many parameters as per the necessity by just separating them with a comma.

The Void keyword

The void keyword enables the user to create methods that do not return a value.

Method Overloading

When a class consists of two or more methods with the same name but different parameters, it is referred to as method overloading, which is different from overriding. In the method of overriding, a method has the same method name, type, number of parameters.

Passing Parameters by Value

While working concealed by the calling process, an argument is to be passed. And this should be in the same order as their corresponding parameters present in the method specification. Parameters can be passed either by value or reference.

Passing the parameters by Value stands for calling a method with a parameter.

Using Command-Line Argument

At times the user may determine to pass a little information into a program during the execution. This is done just by passing command-line arguments to main( ).

A command-line argument is a piece of information that directly precedes the program’s name on the command line when it is run. To access the command-line arguments within a Java program can be done with ease.

The finalize () Method

It is likely to define a method that is to be called before an object’s final destruction by the garbage collector. And this method is referred to as finalize( ), which can be used to ensure that an object terminates perfectly.

To add a finalizer to any class, the user simply defines the finalize( ) method. Within the finalize( ) method, the user will specify actions that are to be performed before the destruction of an object.

Files and I/O

The java.io package contains nearly every class you might ever need to perform input and output (I/O) in Java. All these streams represent an input source and an output destination. The stream in the java.io package supports a lot of data such as primitives, objects, localized characters, etc.

Java input and output process every input and generates the output based on the given input. Java makes use of streams to perform the input and output operation. Package java.io consists of the classes that are needed for the input and output operation. A stream is a series of data. Three streams are created automatically in Java which is as follows:

• • • in: This stands for the standard input stream and gives the data to the user’s program. Generally, a keyboard is used as a standard input stream.
    • out: It stands for the standard output stream to output the data generated by the user’s program and the generic monitor is used for the standard output stream.
    • err: It stands for the standard error stream and is used to get output of the error data generated by the user’s program.

Stream

A stream can be defined as a sequence of data. There are two kinds of Streams −

• • • InPutStream − The InputStream is used to read data from a source.
    • OutPutStream − The OutputStream is used for writing data to a destination.

Java provides strong but flexible support for I/O related to files and networks but this tutorial covers very basic functionality related to streams and I/O. We will see the most commonly used examples one by one −

Byte Streams

Java byte streams are used to perform input and output of 8-bit bytes. Though there are many classes related to byte streams, the most frequently used classes are FileInputStream and FileOutputStream.

Character Streams

Java Byte streams are used to perform input and output of 8-bit bytes, whereas Java Character streams are used to perform input and output for 16-bit Unicode. Though there are many classes related to character streams, the most frequently used classes are FileReader and FileWriter. Though internally FileReader uses FileInputStream and FileWriter uses FileOutputStream but here the major difference is that FileReader reads two bytes at a time and FileWriter writes two bytes at a time.

Standard Streams

All the programming languages provide support for standard I/O where the user’s program can take input from a keyboard and then produce an output on the computer screen. If you are aware of C or C++ programming languages, then you must be aware of three standard devices STDIN, STDOUT and STDERR. Similarly, Java provides the following three standard streams −

• • • Standard Input − This is used to feed the data to the user’s program and usually a keyboard is used as a standard input stream and represented as in.
    • Standard Output − This is used to output the data produced by the user’s program and usually a computer screen is used for standard output stream and represented as out.
    • Standard Error − This is used to output the error data produced by the user’s program and usually a computer screen is used for standard error stream and represented as err.

Reading And Writing Files

As described earlier, a stream can be defined as a sequence of data. The InputStream is used to read data from a source and the OutputStream is used for writing data to a destination.

Tip for becoming a good Java programmer

Java is considered as the basic programming language for many applications around the world. Also, it is the easiest language that can be learned to enter the IT sector. When object-oriented programming is considered the first thing that strikes our mind is Java that makes the way for cross-platform programming along with the application development.

As the best Java training institute in Chennai, FITA Academy helps aspirants make a successful career as Java Developers. Its popularity is due to the effortless path to perform multiple tasks related to programming. Java has been of complete utilization by the experts in the field. And for becoming an efficient developer in Java certain tips will be useful for you.

Strong foundation in the basics

Whatever may be the course you are learning from this Java training in Chennai , having a thorough knowledge of basics is considered to be very important. As there is no point of getting a doubt in sentence formation when you are not thorough with the alphabet. It’s human nature to learn many things and forget the basics. Thus, it leads to the stumbling of developers during the creation of critical programs in Java programming as well.

Execute the gained knowledge

It is usual for children watching TV or listening to music while studying these days, which leads to a shorter span of memory. Similarly, developers who just learn the concepts at one go and do not execute them will experience some sort of issue during the execution of any new program. Thus, we offer hands-on experience for almost all the topics in the class.

Figure out the code and algorithm

For any language, it is indeed necessary to understand the code before its execution. Thus, start actualizing the need for every code you are using in the program right from the beginning, which in turn will build up your confidence while writing complex programs. It has been witnessed that even experts who have years of experience split the whole program into smaller portions to solve them.

Memory allocation

This point has been mentioned for the developers who are changing their domain from C or C++ to Java. Due to the fact that the former language did not have such a feature.

DevOps tools knowledge

Tools knowledge will be of great use during the execution of complicated programs. Thus, get a thorough knowledge of it from the experts from the industry.

Create only useful objects

It is to be kept in mind that whatever object you create it must be useful as they are memory consumers along with the speed. As the creation of any object is incomplete until memory allocation is completed. Thus, it will be better if you cross-check the object requirements before its creation.

Interface better than Abstract class

Multiple inheritances are absent in Java. Make sure you remember this throughout your career as this may have set-back in your life. When compared with the Abstract class, the interface allows the user to have numerous methods to work.

The standard library added advantage

Java has blurred many languages that came into existence before it. This is due to the set of standard libraries which are present in abundance. These library methods make the work of the developer simpler in an organized manner. Moreover, the accomplishment of tasks is presented in a simplified manner.

Primitive classes prefer over Wrapper class

A wrapper class is of great service and primitive class is comparatively slower as they only have the value whereas the former can store information. Wrapper class consists of object value whereas primitive class won’t dish out the expected results.

Deal with Strings

Object-oriented programming categorizes string as a class that affects both the memory and speed of any system. Hence, you must be aware of the usage of string in Java. In order to enhance your career, join our Java Training in Chennai where you will learn Java from experts who will help you gain in-depth knowledge.

Learn Latest version of Java at FITA Academy

Even after 5 years from the launch still its usage has not been reduced due to its one-line code features such as lambdas and stream API. The launch of Java 9, 10, 11 didn’t affect much. Besides, Java 12 which was launched in March 2019 has various features to negate the shortcomings in previous versions.

JVM’s internals

If becoming an expert in Java is your aim, then JVM internals is something which is to be shed light on. If you are well versed with this, then high-performance and robustness will be very easy for you.

Design patterns

It will be helpful for you if designing patterns are a known part regarding Java courses. With the knowledge of design, you will be able to incorporate them into your code as per the requirement.

How To Prepare for Your Java Developer Job Interview?

If you are a fresher in the IT industry, then it is quite obvious that you will be facing many interview questions during your job interviews with some of the best companies like IBM, Oracle, and so on. The most important thing to remember here is that while preparing for an interview, you should not focus only on technical aspects but also try to prepare yourself for behavioral interview questions as well.

Java developers are considered one of the top-ranking jobs in the world right now. There are more than 100,000 new Java developer jobs advertised every month and the number of vacancies is growing at a rate of 20% per year. If you are looking for a career change or if you are just interested in learning more about Java development, this could be the perfect opportunity for you. You can start by becoming familiar with concepts such as object-oriented programming (OOP), polymorphism, inheritance, encapsulation, etc.

You need to know how to solve problems related to these topics. This means that you need to have a good understanding of them. Hence, take advantage of our Java Course in Chennai to be one step ahead of your competition.

The main thing to keep in mind when answering interview questions is to think out loud. It helps you get a better idea of what exactly you are thinking and makes sure that you don’t miss anything.

Here are 5 tips that may help you prepare for your first Java developer interview:

1) Read lots of articles about Java

The Internet is full of information about Java. Reading through blogs, forums, articles and other resources about Java will give you a better insight into the language. At times, you may even find some useful answers to common interview questions.

2) Practice coding questions from various sources

There are plenty of online Java practice tests available. These test your knowledge of Java syntax and provide you with feedback regarding whether you answered the question correctly. In addition, there are also sites that offer real Java coding challenges which are designed to assess your skills in solving complex problems. By taking java training in Chennai, you will be able to code at ease.

3) Learn Java Data Structures

Data structures are used to organize data in a way that allows us to process the same set of data multiple times without having to re-process it each time. For example, we might store all the names of customers in a linked list. We would use the linked list again and again without ever having to copy the whole list over and over.

4) Developing skills using Eclipse IDE

Eclipse is a free software application developed specifically for developing java programs. Its primary purpose is to make the life of java programmers easier by providing tools for Java Development.

5) Join a Java User Group

Joining a local Java user group gives you access to a wide network of people who share your interests and passion for Java. A lot of opportunities come up because of this. For instance, you can attend meetups and conferences where you can learn new things about Java.

What Do You Need to Know Before Taking up the Java Course?

There are several benefits of learning Java. This language is widely used, with excellent libraries, frameworks, and applications. The language is also popular among developers because of its production-ready code. You can build various kinds of applications using Java, including desktop, mobile, and enterprise software. The course can help you develop your skills in specific areas. For example, you can choose to learn about cloud computing or big data analysis. These subjects can help you gain more knowledge and experience in different kinds of jobs.

Before starting the course, it’s important to understand the basics of OOP. Before jumping into the Java world, you should know about its concepts. For example, a method can be abstract if it is not a class. A variable can be abstract. A package can be a group of classes or sub-packages. It also covers an interface. It’s important to know about Java packages and the nested interface.

It is essential to know the fundamentals of JAVA before attempting to take part in JAVA Training in Chennai or to take any other programming course. This course starts with an introduction to OOP and then focuses on the language itself. To learn the syntax, you’ll first have to learn how to set up your own IDE. You’ll start by learning how to handle files, connect to databases, and handle exceptions. Later, you’ll learn about design patterns and a few more advanced topics.

Before you begin the course, you should have an education plan for yourself. Creating a schedule for yourself and working on coding projects is helpful. This way, you’ll prevent yourself from going insane trying to learn Java. The “code everyday” motto is good when learning a new language like Java. Whenever you need to take a break, remember that it’s a risky move. You can’t afford to become an amnesiac, and you could end up relearning a subject you already know.

As a beginner, it’s advisable to learn the basics of the language before working on a project. The TAs should help you understand the concepts and problems related to the language.

The language isn’t difficult to learn, but it is crucial to have some prior knowledge of HTML and Java. The Java training institute in Chennai will teach you how to work with HTML, CSS, and XML. However, you may not have the time to master HTML and XML. But Java is a great programming language and if you are interested in this language, make sure you find a program that has the right prerequisites for your skills.

Before you take up a Java course, you must have the proper knowledge of HTML and a basic understanding of Java. Besides, the course will provide you with a certificate of completion and a portfolio. It will also help you get a job as a professional if you are in the IT industry. This language is a good choice for professionals in any field. But if you are not a programmer, you should first learn the basics of HTML and then move on to another field.

Regardless of your current skill level, if you’re new to the language, you should have a solid understanding of the building blocks of the language. For instance, you must understand objects and classes before you can build web applications. Furthermore, you should understand how to write code in Java. You should be familiar with the terminology. If you’re new to the language, you can easily use the tools provided by the course provider.

It will take you a significant amount of time to complete a JAVA Course in Chennai. To learn, you should spend some time online and in the library. For instance, a Java course should be accompanied by a book with the latest and most up-to-date information on Java. While it might seem complicated at first, you’ll soon discover that learning a language can be fun and rewarding.

What are the different career options for freshers after a JAVA course?

Java is one of the most widely used programming languages in India. If you want to get into web development, then learning Java is essential.

The popularity of this programming language among students can be attributed to its strong features and high level of abstraction. It is relatively easy to learn for beginners and at the same time powerful enough to handle complex tasks.

In addition, it provides excellent support for multi-threading, networking, security, etc. All these factors make Java an extremely versatile choice for both experienced programmers and learners who are just starting out on their careers.

There are many job opportunities available for freshers with Java skills. Som1) Software Engineer: Java is used as a core technology in many software products. From desktop applications to mobile apps, all these programs require Java knowledge. Apart from that, Java is often used to build enterprise systems.

Learning Java will not only help you develop your technical skills, but also improve your communication skills and analytical thinking. This is because Java is heavily based on OOP concepts. Some different career options for freshers after a JAVA course in India are :

1) Software Engineer: Java is used as a core technology in many software products. From desktop applications to mobile apps, all these programs require Java knowledge. Apart from that, Java is often used to build enterprise systems.

2) Database Administrator: A database administrator handles the storage, retrieval, processing, and management of large amounts of data stored in databases. They design and implement various database structures and manage users’ access rights.

3) Web Developer: A web developer creates websites using HTML, CSS, JavaScript, and other technologies. He/she works closely with graphic designers and developers to create user interfaces.

4) Mobile Developer: A mobile developer builds native or cross-platform mobile apps using frameworks like Xamarin, PhoneGap, Appcelerator Titanium, React Native, Flutter, Cordova, Ionic Framework, etc.

5) Network Analyst: A network analyst designs networks which may consist of hardware devices, protocols, and services. In this role he/she collects information about the system in order to analyze and plan changes.

6) Security Expert: A security expert analyzes computer systems and uses proper tools and techniques to secure them against attacks.

7) Systems Analyst: A systems analyst plans and manages IT projects and helps organizations to deploy new solutions and fix problems.

8) Product Manager: A product manager coordinates the work of people across multiple teams and ensures that they deliver working products.

9) Solution Architect: A solution architect designs a specific software solution by analyzing business processes, requirements, and constraints.

10) Design Engineer: A design engineer designs physical objects such as machines, vehicles, buildings, bridges, consumer electronics, etc.

So now if you want to learn Java then FITA Academy has come up with a comprehensive guide to help you get started with your first programming language. We offer JAVA Course in Chennai, tutorials, sample questions, practice tests, eBooks, and many more resources to help you learn Java.

Do I need to have an IT background or coding knowledge to be able to use Java?

No, you don’t need to have an IT background or coding knowledge to be able to use Java. The language is meant for the general public and the instructions are easy to understand.

The Java programming language has been around since the 1990s but it still remains relevant today because of its scalability and availability with many devices, including PCs, tablets, smartphones, and more.

Java is a programming language that is mostly used for developing video games, Android apps, and other programs that process data. It was developed by James Gosling from Oracle Corporation in 1995. It is most commonly used in enterprise systems architecture because it’s cross-platform compatible.

This means that it focuses on objects and everything that they represent in the world around them. This includes things like people, animals, and buildings. If you are applying for a job that requires programming skills, this Java Training in Chennai will give you an edge over the other candidates. Another important thing about Java is that it is platform-independent which means that the code written in this language can be executed on any computer regardless of its operating system or hardware configuration.

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