Very much a newbie, help!

Hi, I'm really new to this, help is greatly appreciated. I getting SOOO frustrated...
When I execute my program, it runs fine until a certain point. Then in the output it says, "java.lang.NullPointerException". What does this mean and how can I fix it?
Please use small words. <:)

Then in the output it says, "java.lang.NullPointerException". What does this mean
and how can I fix it?The output tells you a whole lot more than just this; carefully read the output again: it tells you
on exactly what line, in which method the exception was thrown. It even shows you an entire
back stack trace of method calls, all the way back to your 'main' method.
As other already have pointed out, you're trying to dereference an object reference which happens
to be null.
kind regards,
Jos

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<Edited by Host>

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