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Editorial Team
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Asked: 2026-05-14T03:30:58+00:00

response.setHeader(keys[i].toString(),value); in a servlet is throwing null pointer exception even though none of keys[i]

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response.setHeader(keys[i].toString(),value);

in a servlet is throwing null pointer exception even though none of keys[i] or value are null why is it so?

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1 Answer

  1. Editorial Team

    One of the following is true:

    1. response is null
    2. keys is null
    3. keys[i] is null
    4. the exception is not thrown from the line you posted.
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