6. Java - Variables

Java Variable
A variable is a named memory location where we can store different types of values.
The value of a variable may be changed during the execution of the program.
Variables are of different types for storing different values.
Example:

Types of Value	Keword	Example
Integer Values	int	int m=5;
Character Type	char	char a='v'
String Values	String	String myStr="test"
Double Values	double	double myDbl=2.564
Boolean(true or false)	Boolean	myBool=true;

Following program clear the concept of the variable:



class VariableTest
{
public static void main(String args[])
{
int myInteger;
char myCharacter; /*It can store one character value*/
String myString;
double myDouble;
Boolean myBoolean; /*Boolean can only store true or false value.*/

myInteger=5;
myCharacter='m';
myString="masoomyf";
myBoolean=true;
myDouble=4.25;

System.out.println("My integer variable value: " + myInteger);
System.out.println("My String variable value: " + myString);
System.out.println("My Boolean variable value: " + myBoolean);
System.out.println("My double variable value: " + myDouble);
System.out.println("My Charater variable value: " + myInteger);

/* We can change the variable value. Example: */

myInteger=85;
System.out.println("My new integer variable value: " + myInteger);

}
}

Note:  Variables can also assign for storing instance of a class(object)

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