final variable: you can not change the value of final variable

Java Programming Language / Class, Object and Methods in java

1073

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Program:

 class FinalVariable{
 final int age=70;//final variable
 void changeage(){
  age=40;
 }
 public static void main(String args[]){
 FinalVariable obj=new  FinalVariable();
 obj.changeage();
 }
}//end of class



/* There is a final variable age, 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.
 */

Output:

Output:Compile Time Error
cannot assign a value to final variable age
  age=40;
  ^
1 error

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