Well, my first problem is solved. I have realized that it was due to Eclipse. But my second problem is still not solved. .... Can you please help me solve my second problem ? .... Or still 99% of the text is irrelevant ? Please let me know. May be i will go through the forum conventions and rules and regulation 99 times, so that i am not 99% irrelevant !
The relevancy has nothing to do with the rules. Think about it. If someone has a question for you, which are you more likely to answer? A short-to-the-point question? Or a question, attached to a long program, which 99 percent works?
Ernest is pointing out that if you make your question more readable, maybe there is a chance that more people would actually read it!!!
Anyway...
This is saying that the addAll() method is encountering a null pointer exception. You don't have more info than this, but you can get more if you attach the
Java source code to your
IDE.
But if I had to guess, you probably passed in a null pointer that it wasn't expecting.... like so...
Henry