JAVA and J2EE Training in Chennai

JAVA and J2EE Training in Chennai

Learn Java Training In Chennai At FITA – No 1 Java Training Institute In Chennai. Call 98404-11333 For More Details. Register today for learning basic core Java Training to go for advanced J2EE Java Training in Chennai.

java training in chennai

Java is one of the most powerful and secure programming languages available in the market that was created more than 20 years back. From large super computers to mobile phones, millions of applications run on Java platform. Java was introduced more than two decades ago and it is still considered as an evergreen programming language in the software development industry for its portable, secure and robust features. There is a huge demand for Java and J2EE developers to develop new applications as well as to maintain the old applications developed in Java.

FITA offers a wide range of JAVA training in Chennai to meet the growing corporate needs. The course materials and syllabus are prepared by trainers who have many years of experience in leading IT companies. We provide Java Training in Chennai with Placement in leading companies. Walk into our Office to find the list of Companies our Students are placed.

Our Java Course Syllabus is designed to master your skills in Java programming, development and other essential tools required for developing applications in J2EE, J2SE and J2ME. Our course kit includes extensive practical oriented training pointing real-world problems that help students to gain industry exposure and confidence to work with any job requirements.

Java courses in Chennai at FITA branches are offered by experienced IT professionals with 10+ years of real-time experience in software development industry. Our trainers have strong experience in Java software development so that best quality training is guaranteed. We offer professional training in Java technologies by Java experts with the objective to bridge the gap between college education and IT Industry. After completing Java Training in Chennai in our institution, we offer 100% placement and Java certification support to all our students. This unique approach makes us the best Java training in Chennai.

Get Trained at FITA and become a JAVA Guru!

Why Choose FITA for your JAVA/J2EE Training

Best institution for Java Training in Chennai
Practical training by working professionals from leading IT companies
Learn by working on real-time Java projects
Interactive online training sessions allowing complete interactivity between the student and the trainer
Flexible Timings – Weekday, Weekend & Fast-track
Tips and discussion to build your technical interview skills
Placement tie-up with more than 550+ companies in Chennai

Below is the High Level JAVA course syllabus that can be altered to meet your needs. Please walk into FITA T Nagar or Thoraipakkam or Velachery branch for a detailed JAVA Syllabus.

Java Training in Chennai Course Syllabus


Our core java training module begins with introduction to java, OOPS concepts, semantics, multi-threading, constructors, GUI programming, exception handling, applets, etc. Kindly speak to our Education Counselors for the detailed and best Java training course syllabus

Java Basics
Oops Concepts
Data types, Variables, Methods, Operators
Class and Objects
Access Specifiers & Modifiers
Access Levels
Wrapper classes
Exception Handling
Garbage Collection
Collection Framework
Java I/O
Java Threads
String, Stringbuffer and String Builder
Java Beans
Java Networking

J2EE Training in Chennai

People with basic experience in JAVA and want to go beyond with a deeper knowledge, undergo JAVA J2EE Training in Chennai from FITA. J2EE (Java 2 Enterprise edition) is an environment for deploying and developing enterprise applications. It is used for distribution in a large scale smart network and web services. J2EE is platform independent and has set of services, API (Application Programming Interface), and protocols for developing multi-tiered, Web based application. J2EE consists of the servlet, framework, JDBC, JQUERY, JSP and much more. Some of the topics are discussed below.



J2EE is a vast topic which can be discussed in our J2EE training institute in Chennai. To know more about the concepts and technology, you can undergo J2EE Courses in Chennai by our professional experts in FITA.


Enterprise JavaBeans components
EJB component implementation
EJB component types
Stateful session beans
Stateless session beans
Entity beans
EJB transaction attributes values
EJB container services

Spring Framework

Struts Framework

Hibernate Framework

What will you learn from Java Training in Chennai?

Get in-depth skills on how to program with Java
To learn advanced concepts of Java Threading and Multi-threading
To know the Advanced JDBC and Advanced Java File IO techniques.
Enhance the knowledge to thoroughly use the JDK framework to create Java application.
To learn how to implement standard SQL queries to integrate with databases
Learn client-server interaction through sockets
Remote Method Invocation (RMI)
Learn how to use collection to store and manage data

Scope of JAVA

Everybody must agree to the fact that the Java is one of the best things happened in the IT industry. It has a sustaining eco-system right from the mobility to the middleware. As it is platform independent many users choose Java to work with and it is considered as a user-friendly platform. Presently Java is the most preferred coding language in the entire IT sector and also among developers and no doubt it would have the same place in future as well. Right from the beginning of the career Java developers will have a decent package and they get a very good pay once they get succeeded in their first project. If you have a proper technical knowledge with a valid certification from any of the well-reputed institution, you can fetch a great job in this Java field, just for this reason many people prefer taking Java Training in Chennai. There are lots of onsite jobs available for Java developers and if you choose to get J2EE Training in Chennai and  Java as your working field then you can fly to abroad for your job. To achieve all these you must have clear knowledge in Java and it is recommended to take up a good J2EE Training in Chennai who could teach you all the concepts in depth. And the other important fact is that Java field is one among the highest paid jobs in the IT sector. So, without any further delay, it is better to get  jobs in Java by taking up Java Course in Chennai. Even though various programming languages are evolving in the recent days, Java is considered to be the most wanted high level language to build various applications which are very useful. Java Classes in Chennai demands the highest position in the Job market because many MNCs require persons with Java knowledge and good skill sets in it.  To enhance your knowledge and for your career growth, enroll now for the best Java Training in Chennai.

Recommended by Students as No 1 JAVA Training Institute in Chennai!

Do not wait anymore! Call Us @ 98404-11333 to know more about JAVA J2EE Training in Chennai. You can also contact us by submitting the Quick Enquiry form on the right side of this page to know more about the JAVA Course in Chennai.

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Java Interview Questions

Java Interview Questions and Answers

Before attending the Java interview it is important to know about the expectation from the point of view of the companies. The basic knowledge about the latest changes in the core java with java SE8 like the lambda expressions, streams, Java data and time API are key points to be kept in the mind before attending the interview. Start answering the questions with the challenges and industry knowledge with respect to Java and related to your previous profile. New features in Java 10 release 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. JAVA Training in Chennai helps the learners to create great products and gain huge knowledge.

OOPS is the main concept of Java Training in Chennai, JDBC skills and the frame work knowledge are the important skills needed to evaluate the skills of the employee. Let me discuss some of the tips to crack the Java Interview. The tips can be broadly divided in to two categories such as knowledge preparation and the mind preparation. Let us deep dive in to the topic. The mind preparation is nothing but the practical knowledge which is achieved by constant practice in to the concepts of Java Training in Chennai. Java Course in Chennai trains the students with mock interviews which gives an idea to handle the interviews with proper planning with respect to the time taken for each question.

  1. What is the year of release of Java?

Java is released in the year 1995 and it is evolving in the industry for the past 23 years. It is the high-level programming language and it runs on Windows, Mac, and other variations of UNIX.

  1. List out the platforms supported by the Java Training in Chennai?

Windows, Mac, and UNIX/Linux are some of the platforms which support the Java. The UNIX or Linux supports Ubuntu, red hat and sun Solaris.

  1. Which function in the java makes it executable on other processors?

The compiler in the JAVA saves the file as architectural-natural object file format. The architectural format aids the compiled code to be executable on other processors. Java Training Institute in Chennai provides the opportunities in multiple industries and makes the students to know about the scope of learning Java Training in Chennai.

  1. What is class? What is the difference between the class and interface in Java?

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

  1. 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 indicate the virtual machine starts and the instances are created before itself.

  1. How to handle the immutable object in the 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. Best JAVA Training Institute in Chennai provides in-depth knowledge about java and java supports oops concept which is the base for multiple other technologies.

  1. What is the use of singleton class?

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

  1. 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.

  1. What is Erasure?

If the runtime has no idea about types of generic objects like list<integer> then it is called as Erasure. This is the JVM phenomenon with respect to the generic objects. JAVA Training Institute in Chennai train the students with clear knowledge about the development environment, run time environment and coding for the virtual machine.

  1. How Dot operator is used in Java?

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

  1. How objects are transformed in to bytes in java?

Serialization is the process in the java where the objects are transformed in to bytes in Java. Best JAVA Training Institute in Chennai trains the students to write generic and reusable codes to gain in-depth knowledge in to coding.

  1. How to share objects in a safe way in multi-threaded programming like java?

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

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

Map is an interface, Hashmap implements a map, hashmap is unsynchronized and supports null values and keys, hash table is same like hash map but it is the synchronization version, tree map is similar to hash map but uses 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.

  1. What is the result of the hash code function?

A weak hash code function will result into frequent collision in Hash Map and this leads to increase the time to add an object.

  1. Explain the importance of the getters and setters in Java Training in Chennai?

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. Java Classes in Chennai offers training with small batches and project oriented classes which aids for the continuous learning and in-depth knowledge of the learners.

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

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

  1. What is the function of throw and throws in JAVA?

Throws is used for the declaration of the exception and throw is used to trigger the exception. Best JAVA Training in Chennai offers java course with expert trainers because they know that JAVA is the programming language with highest demand globally.

  1. 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.

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

The yield() method is used for the ready state and Sleep() method is used to wait state. JAVA Training Institutes in Chennai offers customized courses for the beginners and experienced professionals.

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

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

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

Unicode use 16 bits, ASCII use 7 bits, ASCII use 8 bits, UTF-8 use the 8 or 16 or 18 bit pattern, UTF-16 use 16-bit and larger bit patterns to represent in JAVA programming. JAVA Courses in Chennai trains the young minds to acquire the full focus in to the programming and help to get placed with in short span of time.

  1. What is the use of the Applets?

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

  1. How to write applications in the different languages to serve different countries?

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

  1. Describe the benefits of java package?

Java package is used for organizing projects which consists of multiple modules and they protect them from unauthorized access. Core JAVA Training in Chennai is the best course for the beginners as core java is used in programming, automation and also to use the Devops.

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

No, it is loaded in the JVM by default.

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

Public explains the access modifier and it specify that it can be accessible by any class.Static is accessed without creating instance, 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 string is the parameter to be passed to the main method. Join the Java Training Course in Chennai and become a good follower to the Java community which is the big community in the world.

  1. Justify the statement that Java is not 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 object oriented programming language. The primitive data types such as boolean, byte, char, int, floar, double, long, and short shows that java is not object oriented programming language.

  1. What is the purpose of the wrapper classes?

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

  1. What are the two types of constructors in JAVA?

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

  1. List some of the difference 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.  J2EE Training in Chennai is conducted with a focus to help the industry experts to gain in-depth knowledge in to java.

  1. 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 binary operator which compare the primitives and objects.

  1. 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. JAVA J2EE Training in Chennai is the best training to enter in to the software world and get the on-site jobs.

  1. Mention some of the feautures in JAVA9?

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 feautures in the java9 which makes as a popular language.

  1. Mention some of the features in java 8?

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

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

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

  1. Differentiate JDK and JVM?

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

  1. Differentiate JVM and JRE?

JVM is for implementation and JRE is for the execution. JRE does not have tools and it is for the installation. JAVA Course is the widely learned course and it has many online materials also to help the beginners.

Java, Javascript, C#, Python, C++, C, PHP, Ruby, Go, Perl, PL/SQL, Scala, Objective C, Apex, R, Swift, SAS, MATLAB, Crystal 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 in to the software industry.

  1. 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 execute the group of statements in the Java static block.

  1. Describe the term interface?

Interfaces are the hierarchy of code and it is the 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, frame works and tools. It provides contract for the sub classes to implement and also it is used to achieve abstraction in java. Java class is used to implement multiple interfaces and mostly interface is used to implement super class.

  1. Explain the abstract class in JAVA Training in Chennai?

Classes and method for the sub classes are created using the abstract class. The methods with implementation and the methods without body are created using the abstract class. Abstract class is created with the abstract key word. To over-ride the methods in the abstract class, to implement the abstract methods to the abstract Class and it is the base for the sub-classes in Java. JAVA Course in Chennai explains the advantages of java like the huge number or libraries, graphics, sockets and multi thread in Java.

  1. Differentiate the abstract class and interface in JAVA?

Abstract class want abstract key word to create a class and interface is used as key word 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. Abstract class is run with the main() method and it is not possible to run interface with main() interfaces. Search for the Best Java Training Institute in Chennai with Placement to know how the training and the placement are co-related functions.

  1. 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. JAVA Training Institute in Chennai operates with a motive to help the young engineers and experienced professionals to gain in-depth knowledge in Java.

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

After the Java 8 the interfaces are implemented with default method and it is easy to handle the diamond problem with multiple interfaces. Java Classes in Chennai provide the flexible timings and peer approach to make the learning place as the pleasant place.

  1. Describe the term marker interface?

Some functionality in Java implement classes by Java and these functionalities need market interface to force the implementation. Market interface is an empty interface and it is used for the functions like serialization and clone able. Join the Best JAVA Training Institute in Chennai and know about the pros and cons of the java language to use it effectively.

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

Java 5 auto boxing and unboxing make the primitive types and the wrapper classes’ conversion easy. Java Course is the best course among the all other course as there is huge demand for the java programmers in the software industry.

  1. Describe the term Ennum in Java?

Ennum has fields with fixed set of constants and it is introduced in Java 1.5. Ennum is used to create the direction such as EAST, WEST, NORTH, and SOUTH. Ennum constants are static and final and used to create an enum type. Ennum type is similar to the class in Java. Java Training is the best training to gain all the skills required to enter in to the development environment and work towards the perfection of the product. FITA trains the candidates with the java SE which clearly explains the Java Enterprise Software application development and the other environments of java are web application development, mobile application development, java application migration, java application maintenance, java application testing, java custom application development, java desktop application development, java cloud application development, java CMS development, Java application development, java application integration and java application support.

  1. Describe the term Java Annotation?

Java annotations are the Meta data about the program and it is embedded in the program itself. Java annotations provide the 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. Best JAVA Training Institute in Chennai operates with a motto to provide the best education and increase the global presence of the Indian students in the employment Industry.

  1. 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 pattern such as singleton pattern by invoking the private constructor. Reflection help for the processing of the frameworks like spring hibernate or tomcat. Java Classes in Chennai is the best course to enter in to software industry and many web applications, desktop applications and the mobile applications use the Java.

  1. What is composition in Java Training in Chennai?

Composition is used to reuse the code and it is a design technique to implement has 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 gives practical knowledge to the students which are highly needed to clear the interview in the top companies.

  1. Compare the benefits of composition and inheritance?

In the composition method change in the super class might affect the subclass. If the method in the sub class and the method in the super class 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 it exposes all the super class methods and variables to the client. There is no control and it is not possible to design the super class. The inheritance binds the classes of compile time in the run time binding under composition. When invocating the methods the composition provides flexibility. Best Java Training Institute in Chennai With Placement supports the students for the placement with regular updates and the students review is the impact which shows that students are placed immediately in the top companies.

  1. 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 specification in the sorting methodology then comparator instances is used. JAVA Course in Chennai know about the struggle in understanding any programming language and by joining the course the students get the confidence to take up the interview as they get the desired output from the input.

  1. 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 class. Static variables are not there in the inner classes as it is associated with the instances. Java Coaching Centers in Chennai is helpful to understand the simple, clean and well-designed language and makes the programming language as the interesting one to learn intensively.

  1. Explain the term anonymous inner class in Java?

Anonymous inner class is a local inner class without a name. It is defined with single statement and it always extends a class and implements an interface. Java Training Institute in Chennai is wide spread all over Chennai to make the learning as a comfortable task to the students and learn the course with in the given period to accomplish the other task to pursue the career.

  1. Describe the term class loader in Java?

The byte code program in the memory is loaded in to the Java classloader 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 load Class (String name) method. Java Institutes in Chennai covers the java course in two models and they are the basic for the fresher and advanced for the experienced.

  1. 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 loaders in Java. Java Training in Tambaram serves the learners in and around tambaram with the expert trainers and impart quality education.

  1. Explain the term bootstrap class loader?

Bootstrap class loader is used to load the rt.jar and other core classes. Bootstrap class is used to load the internal classes. Java Courses in Chennai makes the real problems easy and it provides the practical knowledge to handle the problems in the development environment.

  1. Explain the extensions class loader in Java?

Extensions class loader is used to load the classes from the JDK extensions directory. Join the Java Training in Adyar and get placed in the top companies.

  1. Describe System class loader in Java?

If -cp or –class path command line options are used to load the classes from the current class path to invoke a program. Join the Core Java Training  to gain the basic knowledge which is the base to learn the other technologies evolving now.

  1. 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 if-else condition. Java Training Course in Chennai is the best course to get the best salary in the software industry.

  1. What is the function of the super keyword?

The super class method need super keyword to access the class. In the constructor method the first statement is the super keyword. It is used to invoke the Super Class in the constructor. J2EE Training in Chennai is suitable to know about the operations in the big companies and handle the big projects.

  1. 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 loop and this is used with a label to the current iteration.

  1. 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. Java Training in Velachery provides the quality education and clear the doubts of the students to make them as industry ready developers.

  1. Which file supports for more than one java class in Java?

.java files support for more than one java classes.

  1. Explain error handling in stored procedure?

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

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

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

  1. What is the function of the file class?

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

  1. What is the process or the life cycle of applets?

Initialization, starting, stopping, destroying and painting are the process or life cycle of applets. Joining the JAVA Course in Chennai is the best option to enter in to the software industry and Java is the gate way to the other technologies.

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

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

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

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

  1. What is the difference between java and JVM in java?

Java is the independent platform and it works with the OOPS concept. Java code are used anywhere with minor changes that is why it is called as platform independent. JVM is not platform independent and JVM differ as per the usage of the operating system.

  1. Differentiate JDK and JVM in java?

JDK is the tool used for development and execution. JVM is used only for the purpose of the execution. Join the JAVA Course in Chennai to explore the big companies where there is huge opportunity to explore different usage of Java.

  1. Differentiate JVM and JRE?

JRE is the tool used for the execution. JRE use 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 by different types of tools in the JAVA.

  1. Which element in java supports the multiple inheritances?

Interfaces in java support multiple inheritances. Interface takes care of the methods and the implementation class takes care of the implementation. So, it is possible to use the multiple inheritances in java. By knows about the demand in the global market and train the candidates to match the job market.

  1. Differentiate path and class path variables?

Path is used to add the directory location to locate the executables in Java. Class path is used to locate the class and the class path location is added to the class path variable. The classpath location can be directory, ZIP files, and JAR files. 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 good number of followers all over the world and JAVA Course in Chennai will bring out the excellent talents to the job industry through training.

  1. Explain the main method in Java?

Java main method is accessible during the run time without initializing the class. Java 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.

  1. Differentiate the term over load and over ride in Java?

The name is same but the arguments are different for more than one method then it is called as over loading in Java. If two methods have same signature then it is called as over riding in Java. The over ridden annotation is used in the child class to make sure whether the parent class is changed. The parent class and the child class has same signature. Java Training Institute in Chennai offers the course with customization and updates as per the industry standards.

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

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

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

The java classes are grouped as per the functionality or modules and this mechanism is named as java package. No need to import any class from the package and java.lang package is imported by default. Java Training Institute in Chennai holds the responsibility to produce good java programmers and hence the training institutes provide good counseling as per the qualification of the individuals.

  1. Mention the different types of access modifier in Java?

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

  1. When final key work is used in Java?

To make sure that the class is end and can’t extend the class the final key word is used. The child class can’t override the final keyword. Java Training with the expert trainers make the programming language as easy.

  1. When static key word is used in Java?

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

  1. Differentiate finally and finalize in Java?

Finally 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 finally 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. Java Training is the best training to get job in the highly competitive software industry.

  1. Is it possible to declare a class as static?

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

  1. Explain the term static import?

If the method or class from other class is used then it is imported to the class with class name. This is known as static import. If static import is over used in the program then it will make the program as unreadable or unmaintainable. Java Classes in Chennai provides the practical oriented training and clear the doubts of the students with immense patience.

  1. 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 statement. There was memory leak in this system and hence the try with resources statement is used to close if it gets finished.

  1. Explain multi-catch block in JAVA?

Multi catch block is used to catch multiple blocks and it is the new improvement in java 7. Ever catch block has similar code in multi catch block and it makes the code shorter and cleaner. Pipe (|) is used to separate the exception and (ex) is used to final the exception. Java Classes in Chennai create the best experience and bring the change in the life of the students through knowledge.

  1. What is new in Java 8 regarding the interface?

Interfaces are generally extended and it is not possible to implement the interface. The new feature in Java 8 is that it has 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 IT back ground and also to the students from the non-IT back ground.

  1. Explain 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.

  1. 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. Best JAVA Training in Chennai imposes the best possible ways to overcome the challenges in the field of the software development.

  1. How to sort objects in Java?

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

  1. Explain about default constructor?

If there is not 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.

  1. Explain the term deserialization in Java?

The stream data created through serialization is converted in to object and this process is called as deserialization.

  1. 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.

  1. What is the purpose of instance of keyword?

Instance of key word is used to check the objects. To know about which class the object belong to the instance of keyword is used. Join the Java Course to become an expert in the java programming.

  1. 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 pass by reference or pass by value.

  1. Where java compiler is stored in JAVA?

Java compiler is not stored in JRE or JVM but it is stored in JDK. Join the Advanced Java Training in Chennai to complete the software projects with in the given time and increase the productivity of the business.

  1. 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.

 For more Java Interview Questions and Answers

Java Job Openings

Date Posted: 20 Dec 2018

Job Title: Developer or Team Leader

Responsibility: Check the code reviews, prepare the HLD, LLD and other technical documents, analyze the performance, give solution to the problems, maintain the quality process, check the deliverables, 3 years’ experience in Angular JS and React JS, 6 years of experience in Java, spring, hibernate, java script, and MySQL. And knowledge to use JIRA tool for bug tracking.

Job Description: Proven record in managing the teams, Leadership qualities to manage the team, excellent communication skills, strong interpersonal skills, Experience working in Agile, Experience in Architecting the Solution (Java) and using Java effectively, check Code Review, Prepare HLD, LLD and Technical Specification Documents as a team leader, analyze the performance of the team members, Adhere to Quality Process for the relevant deliverables, Should be able to get hands-on in the job, when required 6 years of experience in Java, experience in the frame works like Spring and Hibernate, JavaScript, MySQL, 3 years of minimum in Anglar.js and react JS, Knowledge of JIRA. 5 to 10 years of experience in Java.

Company Name: Sensiple Software Solutions Private Ltd

Location: Chennai (Navallur)

Contact Details: E-mail the resume to or call the number 044-47419078

Date of Interview: After the screening the date will be intimated

Date Posted: 20 Dec 2018

Job Title: Java Developer

Responsibility: Take care of the application programming and maintenance of the application.

Job Description: Knowledge in core Java, J2EE, JDBC, and knowledge in frameworks like spring and hibernate. 0 to 5 years of experience is required.

Company Name: Auto Systems PVT Ltd.

Location: Chennai, Hyderabad, Kolkata

Contact Details: Call Sandhya 7378987634 and use the link to apply online to this job with

Date of Interview: 20th December to 19th January, Walk in time is 11AM

Date Posted: 20 Dec 2018

Job Title: Java Developer

Responsibility: Take care of the programming and handle challenges with intense knowledge.

Job Description: Notice period of 15 to 30 days is allowed. Candidate with one to five years of experience in Java is preferred. Knowledge of core java, knowledge in oops concepts, experience in frameworks like spring, hibernate, experience in JDBC, experience in JSP, servlets, Good exposure to HTML, CSS, Jquery, data structures and database knowledge of MySQL operating systems knowledge from Windows and Linux is required.

Company Name: Quintessence Business Solutions and Services

Location: Chennai

Contact Details: Send your resume to the e-mail id

Date of Interview: 19th December to 29th December and the time is 11 AM.

Java Sample Resumes

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 task on time. Apart from the developers even the organizations are making it into their upcoming applications. Get involved into Java by joining our Java Training in Chennai.

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

Independent of platform– It can be run over any system due to the presence of 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 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 C/C++ language then might be very simple for them 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 company’s.  

SecureIt 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.

This year’s latest release in Java is Java 10, and Java 11.  However, support for all the older versions is estimated to be end by 2020. In addition JDK 11 is the one which has been planned to get the long term support provided by Oracle.

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 ability in setting up customized configurations of various modules and removal of any unnecessary modules. That could greatly increases 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.

Second, most important improvement is the function of JShell Read-Eval-Print-Loop. Moreover, developers are able to now get immediate feedback on how code is working. For getting more knowledge in Java join FITA, best Java Training Institute in Chennai.

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  new garbage interface for its collection in Java 10, which organizes and also concentrates source code for the collection of 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 Java ecosystem. Some of the preplanned 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 improvements 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 end after a period of six months when the next version Java 12 will be released into the market.

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

  • JDK 11 new string methodology
  • Pattern with predicate utility methods
  • is Empty
  • Files utility method
  • Epsilon garbage collector
  • Time unit convert

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



Java Tutorial

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 Training in Chennai was a predominant thing in Ethiopia at that time. Java is an island, which is familiar for its coffee beans.

Java is one of the popular computer programming languages.  It is class based and object oriented language.  Java is owned by Oracle company and its running in 3 billion devices around the world. Java will be safe for many years with the plenty of Java developers, running devices and companies adapting. Java is developed by James Gosling at Sun Microsystems and released in the year 1995. It is now acquired by Oracle Corporation. This language has similar syntax from C and C++.

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

1, Java is platform independent

2, Java is an Object oriented language

3, Java is very fast to use

4, Java provides features for security

5, Java is a huge standard library

The latest edition of Java programming is Java SE 8. Many configurations built to suit different platforms. The new version J2 is called as 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 are 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 Java over a period. Thus, the journey of Oak becoming to be known as Java ends here.

Java Training in Chennai 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. In addition, by the month of May 2007 it was completely code free language.

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 the interaction with other companies in order to extend the Java community. With the back-to-back, release of versions in Java its expectation for lots of changes in the near future. Thus, Java Training is very popular in the market to become successful as a programmer. FITA is rated as no.1 in Core Java Training in Velachery.

Java Training in Chennai- Outline

There are many programming languages present in the market and Java Course has secured its place right at the top of the list. Sun Microsystems developed it in the year 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 the month of September 2018.

Pattern 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 in order to for different platforms like J2EE, J2ME and the list continues.

Its preference amidst developers is keep on increasing as program once written in
Java Training in Chennai can be executed irrespective of the platform it is implemented.

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 there is many similarities 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 for getting solution issues, which arises in C++. Hence, Java Course in Chennai is preferred over others.

How is Java related to C#

C# language was developed by Microsoft, which has similar features with Java. Both of them are using the general style syntax. FITA, is considered as the best Java Training Institute in Chennai.

Contribution of Java to Internet


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

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

Points to remember:

  • Every applet is a sub-classes of java.applet.Applet class.
  • They have never been a stand-alone program as they run inside an apple 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.
  • For the execution of applet at main() method is not used in the beginning.

 The various methods are:

  • init( ) : This is the first method which is called for the initialization of variables. Moreover, it is called only onceduring run time.
  • start( ) :It is the next step after init() and also called in order to restart an applet once it is stopped.
  • paint( ) : The paint( ) is called every time 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.
  • On another instance itis also called when the execution of applet begins.
  • stop( ) : This method is called when a HTML document having is 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 the memory.

Features of Applets over HTML

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

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

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

Complex-free: Java was designedfor the developers to write programs with ease. It is considered easier than C++ as there is automatic memory allocated.

Multi-threaded: The capacity of a program to perform many tasks simultaneously within the program.

Object-Oriented: Allows the user in 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 secured 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.

Thus, enroll yourself into Java Training at FITA for a blissful future.

History of Java

The project Java was initiated in the year 1991 by James Gosling, which was originally called “Oak” named after the Oak tree, 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 the year 2006under the terms of GPL. Finally, on May 8th of 2007 the process of making it code free was accomplished. Java Classes in Chennai is of great opportunity for 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


A program in Java is acluster of object, which communicate 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 is 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:

  • Identifier should begin with alphabet, underscore or currency character.
  • They are case sensitive.
  • The rest of the characters should be combination of characters.
  • Keyword should not be used as 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 variable to have single predefined value form the given list. Enumsare used for the reduction of bugs in the code.

Java Keywords

There are certain reserved words that cannot be used as variableor 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, instanceof, 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++.


The specialty of Java is classes can be derived from classes.


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

Java – objects & Classes

Java is 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 aredefined within a class and outside any method.
  • Class variables: These are declared within a class, outside method, with static keyword.

How to Use Singleton Class?

Its work is to control the object creation, which in turn limits the number of objects to one. As there is singleton instance, its occurrence will be restricted to one per class. Join our Java Classes in Chennai and get more knowledge in it.

How to Create an Object

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

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


The various operator available in Java are:

  • Bitwise Operators– &(bitwise and), ~ (bitwise compliment), | (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


There are over 3 billion devices, which run on Java script. Thus, joining Java Course in Chennai will be of great help for you to enter the IT sector. Few among them are listed below:

  1. Web based Applications such as, etc.
  2. Mobile
  3. Enterprise based Applications like banking applications.
  4. Robotics
  5. Desktop based Applications like media player, acrobat reader, etc.
  6. Embedded System
  7. Smart Card
  8. Games

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 creation of dynamic page is known 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 also known as window-based or desktop applications are traditional software, which are indeed necessary to be installed on every machine. There are various examples for standalone application 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.lang,, 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 in order to develop various mobile applications.

4) JavaFX

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

Difference between JDK, JRE, and JVM


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

All the three JVM, JDK and JRE are platform reliant due to the composition of all the operating systems that are unique. JVMs is availability us not constrained to any one hardware or software. For further information, join FITA, the best Java Training Institute in Chennai.

The tasks performed by JVM are:

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

What is JVM

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

JVM provides description for the following:

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

Java Variables

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

Variable is name given for memory location, which are 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.


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 bringing into use.
  • Variable has always been a combination of vary + able.

Data Types in Java Training in Chennai

Data types define the different size, values as well, which can be stored in the variable. It is classified into two data types in Java:

Primitive data types: The primitive data types consists 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. Become smart by joining our Java Training in Adyar.

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.

Byte Data Type

The byte datatype also belongs to primitive data type, which has an 8-bit signed two’s complement integer. 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 as 0.

This is used in order to save memory in large arrays in which the memory savings is indeed necessary that saves space as a byte is 4 times smaller than integer. This can be used for the replacement  of “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 maximum value as 32,767. The default value in short data type is also 0.

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

Int Data Type

This data type is a 32-bit signed two’s complement integer with 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 default data type for the integral values except if there is no problem with respect to the memory.

Long Data Type

This is a 64-bit two’s complement integer and consist 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 need of range of values that is provided more than by int.

Float Data Type

This data type is single-precision 32-bit floating point with value range that is considered unlimited. It is favored to 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 the precise values like currency with a default value as 0.0F.

Double Data Type

This is a double-precision 64-bit IEEE 754 floating point with unlimited range of value. This data type is normally used for decimal values similar to float. The double data type should never be used for the 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 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.



//code to be executed


Java if-else Statement

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



//code if condition is true


//code if condition is false


Java Nested if statement

The nested if statement serve 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 variable against multiple values.

Loops available in Java

In the various programming languages available, loops are used in order 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 iteration is steady, it is recommended for the usage of loop.

They are:

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

Java Simple For Loop

A simple for loop is 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, initialization of 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 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 collection in java. And is easier to implement than simple for loop as there is no need to increment the value along with the use subscript notation. It works on elements basis and not on the index. We get you trained in Java Course for a bright future.


for(Type var:array){

//code to be executed


Java Labeled For Loop

We can bear a name of each Java Training in Chennai for a loop. We can make use of label before the for a loop. It is indeed useful if we have nested for loop, with its help we can break/continue specific for a loop.




//code to be executed


Java Infinitive For Loop

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



//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 iteration is not fixed, it is recommended to use while loop.



//code to be executed


Java Infinitive While Loop

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



//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 iteration is not fixed and you must have to execute the loop at least once, it is recommended to use do-while loop.

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



//code to be executed


Java Infinitive do-while Loop

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



//code to be executed


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 in order to break loop or the switch statement. It breaks current flow of program at specified condition. In case of inner loop, it breaks the inner loop alone.

We can use Java break statement in all types of loops such as for loop, while loop and do-while loop. We will give training with the help of real time examples in FITA, the best Java Training in Chennai.




Continue Statement

The continue statement is used in 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 specified condition. In case of inner loop, it continues inner loop.

We can use Java continue statement in all the type of loops like for loop, while loop and do-while loop. For any further knowledge in Java enroll yourself into our J2EE Training in Chennai.




Java Operators

It is used to perform an operation on variables and values. In this two terms are included operand and operator.

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Example :

int x=100 + 50

* Values are the operand

*The operation performed between two operands is defined as an operator. FITA is the no.1 JAVA Course in Chennai

Java Data Types

Specified data type only the variable in java. We cannot use all data types.

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int  x = 6;

float y=6.99;

char z=’a’;

boolean n=true;

string =”hello”;

Non-Primitive data types

It is a reference to data types. It was created by a programmer while coding   the program, it may be the Reference variables or Object variables

*Non-Primitive data types are used to call methods to perform                      certain actions

*It is not defined by java, it was created by the programmer

*Compare to primitive data types, Non-primitive is NULL does not       has a value

*Non-primitive data types start with an uppercase letter.

*Non-primitive data types are may be a string, array, class, interface.

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Java Strings

Java string is a series of character, we can store that in a single variable. Using some data types.

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The data type used for Java string is char, string

Char a[ ]={‘a’’b’’c’};

string s=”madam”;

String Length

From this string operation we can find the length of the given string. And we can store that in a single variable.

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string s=”How are you”;

Int x=s.length( );

System.out.println(“The length of the string is: “+x);

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String Methods

1)toUpperCase( );

2)toLowerCase( );


string s=”maDam”;

System.out.println(s.toUpperCase( ));


System.out.println(s.toLowerCase( ));


Finding a String

Using the String method indexOf( ) we can find the 1st occurrence of the string in the given string.FITA top Java training institute in chennai


string s=”How are You”;


RESULT::4(java counts from the position 0)

String Concatenation

We can use + operator in between two strings to add them together. And also we can use Concat( ) to add two strings.You want a advance knowledge in java FITA advanced java training in chennai


string x=”Tamil”;

string y=”nadu”;

System.out.println(x +” “+y);


RESULT:: Tamil Nadu

{we have added an empty text(“ “)to create a space between those words}

Adding Numbers and Strings

Java uses the + operator for both the addition and concatenation.

*If you can use + for numbers it will add the numbers and give the result

*If you can use + for the string it will concat those strings. As we can see in the before Examples.FITA Best JAVA Training institute in Chennai

Example 1

int x=50;

int y=30;

int z=x+y;


Example 2

string x=”50”;

string y=”30”;

string z=x+y;


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Example 3

string x=”50”;

int y=”30”

string z=x+y;


Java Math

Java math class has many methods to perform mathematical operations on numbers while doing the program

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1)Math.max( , )

It is used to find the highest value between the two numbers given in the math function.





This method is used to find the lowest value  between the two numbers given in the math function


math.min(50, 30);



Using this function we can find the square root value of the given number

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This method returns the positive value of the integer give in the math function




Java Arrays

Using java array we can store the multiple values in a single variable, instead of declaring separate variables for each value.

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We have to declare the array using square brackets.

string [ ] x;

Then using curly braces we have to insert the values in the array, within double quotes and separated with a comma.

string [ ] x={“car”,”bike”,”scooty”};

Access the Elements of an Array

Refering the index number we can access the array.

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string [ ] x ={“car”,”bike”,”scooty”};


RESULT::car {array index starts from 0 count}

Change an Array Element

If you want to change the element of the array,refer the index number of the array.FITA JAVA Course


 string[ ] x={“car”,”bike”,”scooty”};



RESULT:: Instead of car..train will add

Array Length

Using this function we can calculate the number of elements inside the array.FITA JAVA Training Chennai


string[ ] x={‘train”,”bike”,”scooty”};



Using loop in Array

We can use the loop for the array to get the elements from the array and we can know how many times the loop should run

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string[ ]  x = {“train”,”bike”,”scooty”};

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







Multidimensional Arrays

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

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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.

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

int y=x[1][2];



We can also use for loop inside the for loop to access the elements of a two-dimensional.FITA core Java training in chennai


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

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

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



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, keyword is included in the definition of a class, variable, or method. Java Training in Chennai will be of great scope for you.

Access Control Modifiers

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

  • Those are visible to 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 need of objects is done instead of primitive data types. In order to achieve this, Java gives wrapper class Character for the primitive data type char.

The Character class normally wraps value of all the primitive type char into object. Thus, any object of the type Character can consists of single field whose type is char. Java Course in Chennai is the best course for professionals who are looking for domain change.

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

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

Escape Sequences

When any character is preceded by a backslash it is referred as an escape sequence and has specific meaning to compiler. FITA is ranked as the best institute for Java Course in Chennai.

String Class

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

It is considered as a powerful concept as everything is considered as a string, while the submission is done any form in window, web based or mobile based application.

Creating Strings

Whenever there is a presence of string literal in the code, the compiler enables in 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.

String Length

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

Date and Time

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

Getting Current Date and Time

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

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

Regular Expression

Regular Expression 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 in order to match the pattern with regular expressions, which is similar to Pearl programming language. This package consists of three classes:

Pattern Class − This provides no public constructors. In order to create a pattern, user must invoke its public static compile() methods. It is 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:

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

Capturing Groups

Capturing groups are 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 together in order to perform an operation. When the user call the System.out.println() method,  the system executes several statements for displaying a message on 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 as parameters, into a method.

Methods are deployed to perform specific actions, called as functions.

Creating Method

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

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 returning nothing.

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

The process of method calling 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

It is possible for the information to be passed to functions as a parameter that are specified after method name, within the parentheses. The user can also add as many parameters as per th 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 by same name but various parameters, it is referred as method overloading, which is different from overriding. In the method of overriding, a method has same method name, type, number of parameters.

Passing Parameters by Value                               

While working concealed by calling process, an argument is to be passed. And this should be in 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 few information into a program when during the execution. This is done just by passing command-line arguments to main( ).

A command-line argument is information that directly proceeds the program’s name on command line when it is run. In order 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 garbage collector. And this  method is referred as finalize( ), that can be used in order to ensure that an object terminates perfectly.

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

Files and I/O

The 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 package supports many data such as primitives, object, localized characters, etc.

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

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


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 but 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 but 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 user’s program and usually a keyboard is used as 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.

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