Getting JAVA_HOME at runtime

[Jean-Baptiste Quenot]

* Herve Quiroz:

> In /usr/local/bin/javavm, line 447:
> 
>   export JAVA_HOME
>   tryJavaCommand "${JAVA_HOME}/bin/${IAM}" "${@}"
> 
> So indeed, JAVA_HOME is set accordingly to the JVM picked up by the
> script.
> 
> That's how the launcher shell script works for devel/maven2 for example.

OK, but imagine that the target application has a shell script
that needs JAVA_HOME.  There are plenty of programs that are based
on JAVA_HOME instead of the java binary.

How to get the preferred JAVA_HOME?
-- 
     Jean-Baptiste Quenot
aka  John Banana Qwerty
http://caraldi.com/jbq/