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Asked: 2026-06-12T14:53:33+00:00

Hello after following the advice here Running JAR file on Windows , I’ve managed

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Hello after following the advice here Running JAR file on Windows, I’ve managed to execute my .jar application whenever I double-click on it in Windows (it is a JFrame application).

However, when an certain exceptions occurs, I do e.printstackTrace(); and generate a custom error message to the UI. When I launch the ‘.jar’ file from the command prompt, the standard error stream is the console. My question is, where does the exception trace go when I run the .jar via double-clicking?

This is a “toy” application, so I would like to avoid a logging mechanism – I only need a place to dump all exception traces for later debugging.

Thank you.

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1 Answer

  1. Editorial Team

    My question is, where does the exception trace go when I run the .jar via double-clicking?

    Nowhere. There’s nowhere for it to go, basically – there’s no console attached. You may want to find the user’s home directory and put a log file there, or something like that.

    (Rather than using e.printStackTrace(), I’d suggest using a proper logging framework, whether that’s log4j, java.util.logging or whatever. You say you don’t want a logging mechanism, but “a place to dump all exception traces for later debugging” sounds like logging to me…)

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