Java interface with different method parameters

Question

I want to have an interface that allows me to use methods with different parameters. Suppose I have an interface:

public interface Stuff {
    public int Add();
 }

And I have two classes A and B who implement the interface.

public class CLASS A implements Stuff{
    public int Add(int id);
}  


public class CLASS B implements Stuff{
    public int Add(String name);
}

How can I achieve this?

Answer 1

You can write a generic interface for adding some type, something like this:

public interface Addable<T> {
    public int add(T value);
}

and then implement it via

public class ClassA implements Addable<Integer> {
    public int add(Integer value) {
        ...
    }
}

public class ClassB implements Addable<String> {
    public int add(String value) {
        ...
    }
}