Java final variable

Java final variable

If you make any variable as final, you cannot change the value of final variable(It will be constant).

Example of final variable

There is a final variable speed limit, 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.

1.    class Bike9{  

2.     final int speedlimit=90;//final variable  

3.     void run(){  

4.      speedlimit=400;  

5.     }  

6.     public static void main(String args[]){  

7.     Bike9 obj=new  Bike9();  

8.     obj.run();  

9.     }  

10. }//end of class  

Output: Compile Time Error