``Primitive'' overrides convenience methods

I prefer this way as it associates application code directly with the appropriate method of the appropriate object.

class MyButton extends Button {
    public boolean action(Event evt, 
                          Object what) {
        // handle button ...
        return true;
    }
}

Multiple buttons can be handled by

• each one subclassing from Button; or
• each one being a MyButton and testing within action()