final parameter:If you declare any parameter as final, you cannot change the value of it.

Java Programming Language / Class, Object and Methods in java

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Program:

 class Calculation{
  int add(final int p){
   p=p+2;//can't be changed as n is final
   return p;
  }

  public static void main(String args[]){
    Calculation b=new Calculation();
    b.add(5);
 }
}
 
 
 /*
 
 What is a final parameter?
 If you declare any parameter as final, you cannot change the value of it.

   */

Output:

Output:Compile Time Error
error: final parameter p may not be assigned
   p=p+2;//can't be changed as n is final
   ^
1 error

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