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Editorial Team
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Asked: 2026-06-09T16:08:42+00:00

I have a Java Servlet that generates randomly thousands of Strings every time is

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I have a Java Servlet that generates randomly thousands of Strings every time is called. I want the user to be able to get them in a file when he calls the Servlet. I don’t want to write first the file on disk or memory.
Is there a way to write the file on the fly when the user calls the servlet?
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1 Answer

  1. Editorial Team

    Any text that you generate in the Servlet can simply be written to the OutputStream returned by ServletResponse.getOutputStream().

    If you want the output to be downloadable as a file, you can follow the approach in this answer – https://stackoverflow.com/a/11772700/1372207

    The difference would be, that the Content-type would be text/plain and instead of reading from another inputstream, you would just write the String objects directly to the ServletOutputStream using the print(String) method.

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