How to determine JAVA_HOME on Debian/Ubuntu?

Posted by Witek on Server Fault See other posts from Server Fault or by Witek
Published on 2010-05-20T15:09:42Z Indexed on 2010/05/20 15:11 UTC
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java

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ubuntu

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debian

On Ubuntu it is possible to have multiple JVMs at the same time. The default one is selected with update-alternatives. But this does not set the JAVA_HOME environment variable, due to a debian policy.

I am writing a launcher script (bash), which starts a java application. This java application needs the JAVA_HOME environment variable. So how to get the path of the JVM which is currently selected by update-alternatives?

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