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Recommended reading: Coding Horror: Rubber Duck Problem Solving

That still is not correct. Aren't you testing this out as you go?

Also, did you really use Object as a class name?

That was exactly what copeg told you, to take a closer look at the intersection() method, which you were using incorrectly. Actually, I predict you'll have quite a few problems with that code.

You've been given help already, I suggest your reply with a little more gratitude.

The intersects() method takes an argument. You need to figure out what that argument should be. What it should be...