Variable

Variable

Variable is name of memory, which use to allocate reserve memory location. It is also called as "VARY+ABLE" which means vary can be changed.

Here a is used to allocate memory to variable

Types of Variable:

1. Local Variable: Which is initialize inside the method is called as local variable.

2. Instance Variable: Which is initialize inside the class but outside the method is known as Instance variable.

3. Static Variable: A variable which is declared as Static is known as static variable, A static variable can not be used as local variable.

Example

public class Second

{

static int a = 10;//Global Variable

static int c;// instance Variable

public static void main(String[] args)

{

   int b = 20;// Local Variable

  

   c=a+b;

   System.out.println(c);

    }

}