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Editorial Team
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Asked: 2026-05-27T01:33:27+00:00

I’m not trying to configure log4j for an Eclipse project but for the IDE

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I’m not trying to configure log4j for an Eclipse project but for the IDE itself!!

When using Xtext-based plugins, I’m seeing this warning in the console:

log4j:WARN No appenders could be found for logger (org.eclipse.xtext.ui.internal.Activator).
log4j:WARN Please initialize the log4j system properly.

How do I supply a log4j configuration to the IDE itself?

I tried adding -Dlog4j.configuration=.../log4j.properties to eclipse.ini. The entry is visible in About/Configuration and the file path is correct but it’s not picked up.

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1 Answer

  1. Editorial Team

    The log4j.properties has to be on the classpath of the org.apache.log4j plugin. Therefore you’ll have to provide a bundle fragment that contains your configuration.

    Xtext ships with org.eclipse.xtext.logging for that reason.

    [EDIT] So one solution for the warning above is to make sure that the plugin org.eclipse.xtext.logging is installed. You can find it on the official Indigo download site.

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