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What is the problem in my code?

orderIsbnDetails.setIsbn(request.getParameter("isbn"+ i).trim());

This line throws NullpointerException

user207421
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Nirmala Mary
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1 Answers1

0

request.getParameter("isbn"+ i)is null.

null.trim() causes NullPointerException.

user207421
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hoyeonUm
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