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It it possible to get the location of the jre that is used for the current process. Need to launch an other java application as a separate process. Having different jre's available (and no path variable set) I would like ask eg. the loader for this. Running on Solaris, Linux, Windows.

owan
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3 Answers3

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You can use:

System.getProperty("java.home")

http://download.oracle.com/javase/6/docs/api/java/lang/System.html#getProperties%28%29 says:

java.home: Java installation directory

Hendrik Brummermann
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    .. and what if another JRE was used to start the currently running JVM (which I believe is possible, correct me if I'm wrong), i.e., no the one installed in JAVA_HOME? – Art Licis Dec 25 '10 at 20:52
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    It returns the path to the JRE that is used to run the program which does the lookup. It is not related to JAVA_HOME. – Hendrik Brummermann Dec 25 '10 at 20:56
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System.getProperty("java.home")
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System.out.println(System.getProperty("java.home"));

The code above will return the full physical path to current jvm's jre path. Tested only in Windows 10.

Asalle
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Theepan Gnani
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