"Blocking" inherited methods

Question

I have a class, Inventory which I want to extend HashMap. However, I only want objects of certain types added to it, and in a certain way.
To do this, I envisaged having public methods like :
public Object put(MyType1 key, MyType2 value)...but then I want to prevent the use of the standard put method of the HashMap (ie. to "enforce" the above method). I attempted this by overriding it and declaring it private, but that isn't allowed by Java. Is there a way I can extend the class and not allow inherited methods to be used?
I can see two (less than satisfactory) ways around this :
1) Override the methods, but implement no functionality for general arguments. This has the drawback of not being picked up as an error if the method is used.
2) Make the HashMap an instance variable. But that would involve a lot more rewriting of other code, and re-implementing methods I want to inherit.
(There are a other methods I want to override, not just put, btw).

Answer 1

2) Make the HashMap an instance variable. But that
would involve a lot more rewriting of other code,
and re-implementing methods I want to inherit.It shouldn't require much rewriting for existing client code as you could put helper methods into your new class. E.G.
public int size()
  return myHashMap.size();
}Theres only a few methods in HashMap so it wouldn't take too long to do. This also has the advantage that you are now able to have your own typesafe methods. E.G.
public MyType2 put(MyType1 key, MyType2 value)
  return (MyType2)myHashMap.put(key, value);
}Col