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Editorial Team
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Asked: 2026-06-19T02:06:40+00:00

My app only starts logging to log4j if I put a : on the

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My app only starts logging to log4j if I put a : on the end off the classpath. I already have the properties file and the jar in the classpath, so I’m not sure what’s going on. What does ending the classpath with a colon even do? The startup command thus becomes something like this:

java -cp path-to-log4j.properties:bunch:of:other:stuff: app

If I take that last colon off it stops logging, as if it can’t find log4j. My question is, what is that last colon actually doing, as in what directory is it adding to the classpath?

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1 Answer

  1. Editorial Team

    usually you should put the classpath in quotes -cp “path:path2”.

    EDIT: The colon might add the current directory.

    EDIT2: One cannot add files (except jar files) directly to the classpath. Only directories. Read that today^^

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