How to restrict a method to override to just one subclass only in java? is it possible?

Question

Let's say I have a method run in my class A

class A {
  void run(){
  }
}

and I have another class B which is going to extend class A.

class B extends A {    
  void run() {
  }    
}

I want to restrict run method only upto class B. No further overriding should be allowed. is this possible ?

Please take the time to format the code in your question in future, and make it valid code rather than pseudo-code - `class`, not `Class` in this case. Now do you *also* want to prevent other subclasses of `A` from overriding `run`, or just subclasses of `B`? — Jon Skeet, Feb 09 '18 at 19:20
Then do what the duplicate or Mureinik suggest in their answers. — Sotirios Delimanolis, Feb 09 '18 at 19:50

score 2 · Answer 1 · answered Feb 09 '18 at 19:20

2

You could make B's method final, so extending classes wouldn't be able to override it:

class B extends A {
    @Override
    final void run() {
    }
}

answered Feb 09 '18 at 19:20

Mureinik

I want to restrict run method at class A level only not at class B level. – user2705961 Feb 09 '18 at 19:25

1 Answers1