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I have moved the final post by the OP to the other thread and will close this one.

If anyone has objections to this, post in the Cafe forum. Or PM me and take your chances that I read the PMs......

I understand how frustrating it can be not to see the way through a problem.

If the runtime complains that a variable is null, then it really is null. You might think it was given a nonnull...

What you are describing now is the same as in your other thread: http://www.javaprogrammingforums.com/whats-wrong-my-code/30154-implementing-interface.html

Follow copeg's advice and find which...

You access it as you would any variable: just by using it.



interface Greeter {
public abstract void greet();
}

/**
* A Greeter implements which greets a specific target in