Using two (or more) objects as a HashMap key

Question

I want to store certain objects in a HashMap. The problem is, usually you just use a single object as a key. (You can, for example, use a String.) What I want to do it to us

Answer 1

You could create a holder class that contains the class and string that you want as the keys.

public class Key {

    public MyClass key_class;
    public String key_string;

    public Key(){
        key_class = new MyClass();
        key_string = "";
    }

}

Probably not the best solution, but a possibility.