Null pointer exception in servlet

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Linked 1. Related Hot Network Questions. Stack Overflow works best with JavaScript enabled. Well, you did, and if it is null which it is then you call the forward method, and then control continues on to the code after the if-statement. Here you use the "screen" variable again, and it's null, so you get an exception.

Ok Thanks! Can you tell me any quick solution for that? Yes you are right. What I mean is If its null it will stay on the same page or redirects to Login page any one Otherwise if its not null then proceed further. Just to re-emphasize what Rafael said, are you familiar with the "else" part of the Java "if" statement? Boost this thread! Passing a String[] from jsp to servlet. NullPointerException Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception org. NestedServletException: Request processing failed; nested exception is java. NullPointerException org. NullPointerException com. NullPointerException System. Prev java. NoSuchMethodError Example.

Next Core Java Quiz. Pankaj I love Open Source technologies and writing about my experience about them is my passion. Follow Author. Comments Nafees Kausar says:. April 20, at am. Improve this question. Kudos on packing so many disparate questions into one paragraph. Add a comment. Active Oldest Votes. Pass them as method parameter s. Improve this answer.

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