JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Variables

A variable is a container that holds values that are used in a Java program. In java, all variables must be declared before they are going to be used. The syntax for variable declaration is given below:

type identifier1, identifier2, identifier3;

Here type can be any java primitive datatype or it can be a class or interface. Here identifier is name of the variable.

Example:

int a,b;
char c;
boolean status;

Before using the variable, we need to initialize it. The syntax for initialization is given below:

Example:

a=10;
b=12;
c='a';
status=false;

We can club declaration and initialization into one step as given below:

int a=10,b=12;
char c='a';
boolean status=false;

Next Page: Java Arrays

Knowledge Centre
What is adapter class?
An adapter class provides the default implementation of all methods in an event listener interface. Adapter classes are very useful when you want to process only few of the events that are handled by a particular event listener interface. You can define a new class by extending one of the adapter classes and implement only those events relevant to you.
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-- William Arthur Ward

About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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