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Editorial Team
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Asked: 2026-06-05T17:03:22+00:00

I am trying to add a custom log handler to my java application. I

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I am trying to add a custom log handler to my java application. I have implemented a InnerLogger class that extends java.util.Logging.Handler class. And in my logging.properties declared as a handler:

handlers:com.mycompany.util.InnerLogger

But when I launch the development sever, I got the following error:

Can't load log handler "com.mycompany.util.InnerLogger"
java.lang.ClassNotFoundException: com.mycompany.util.InnerLogger

I can add my custom handler to loggers one by one ,but I just wondering is there a way to add it to all loggers.

Thanks

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1 Answer

  1. Editorial Team

    I was able to add a Handler to the root Logger when my application initializes. You can put this code in a warmup task or servlet filter.

    private static Logger LOG;

...

LOG = Logger.getLogger("");
LOG.addHandler(myCustomHandler);

    Its not as graceful as using logging.properties, but it is an adequate workaround when running on GAE.

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