Final Variable With Example

There is a final variable a, we are going to change the value of this variable, but It can't be changed because final variable once assigned a value can never be changed.

Example Program

class Super

{

                       final int a=100;

                       void show()

                       {

                        //a=200;error , can't be changed because final variable once assigned a value can never be changed.

                        System.out.println("Welcome to the final Keyword                       "+a);

                       }

}

class Demofinal

{

                       public static void main(String args[])

                       {

                        Super obj=new Super();

                        obj.show();

                       }

}

Output

D:\>javac Demofinal

D:\>java Demofinal

Welcome to the final Keyword    100