Using log4j for different applications

I have a problem with log4j loggin and I hope you can help me on this.

This is the scenario: I have 3 different applications (in other words 3 .jar) A, B and C. A is always running and from time to time calls B and C to execute them. Each of them have its own log4j.properties (with the path duly included in the MANIFEST) but Log4j only takes the properties of the main app A into consideration, ignoring the rest. I need to know if I can force Log4j to use for each app i开发者_Go百科ts own properties. I have seen something related using DOMConfigurator, but if I'm not wrong this only works with xml files and I'm using properties.

Thanks in advance

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There are several Configurators, one of which is the PropertyConfigurator.

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I need to know if I can force Log4j to use for each app its own properties.

Yes, you can. When you launch the applications B and C, define this system variable at their command line:

-Dlog4j.configuration=B.properties

where B.properties is the file name of log4j properties file in B's classpath. Likewise for application C.

Edit: found this: Change location of log4j.properties