@Override's, Acces Modifiers and Subtypes... (Java)

Question

Well I've run into a predicament...

Ok I have 4 classes, 2 I cannot edit,

• StateBasedGame (Not Editable)
• GameState (Not Editable)
• Game extends StateBasedGame
• EnhancedGameState extends GameState

The StateBasedGame contains the public method void addState(GameState state), however for the class Game I want to make this method accept only an EnhancedGameState, or create a new method, as it contains the method isOrderable() which I need to call.

This won't work as I will produce a compiler error.

public void addEnhancedState(EnhanchedGameState state){
    addState(state);
    //Do Other Logic    
}

@Override
private void addState(GameState state) { 
    super.addState(state);
}

There may not be an answer, but how would you go about doing this.

EDIT: I don't want to know why this isn't working. I want to know how to do this.

Thanks in advance,

– Curlip

Answer 1

You are overriding a public parent method with a private child method.

Fix it this way:

@Override
public void addState(GameState state) { 
    super.addState(state);
}

And BTW, this piece of code is redundant since you can just call the parent addState() directly.

UPDATED: you could make it 'unusable' in the following somewhat ugly manner:

@Override
@Deprecated
public void addState(GameState state) { 
    throw new UnsupportedOperationException("explain why");
}

public void addState(EnhanchedGameState state) { 
    ... new implementation
}