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Help me cleaing with this Exception

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Error: java.lang.NullPointerException"
I have one Controller class, One EJB (Stateless), Two Customer tag handler classes and one one jsp.
I am able to compile all the classes. But when i come to jsp and try to compile, iam getting the above error.
Iam using Oracle JDeveloper 9i IDE.
Please help me out.
very urgent
thanks in advance
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Usually, when you see java.lang.NullPointerException it means that some of your variable that are used are not initialized so you can't perform operations with them.
For example:

Of course this is very basic example, you've got to go thru your code and see exectly what's missing.
Good Luck!
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