point of having an instance variable as final?

Question

what is the point of having an instance variable as final?

isn´t it better to have that variable set as a static final variable then?

cause if it can\'t be chang

Answer 1

class A{
    public final int x;

    A(int arg){
        x = arg;  // This is legal  !!!
    }
}

public class HelloWorld{

     public static void main(String []args){
         A  a = new A(1);
         A  b = new A(2);
         System.out.printf("a.x = %d, b.x = %d", a.x, b.x);
     }
}