how to echo java_home in windows cmd
echo %JAVA_HOME%
java_home what is
Optional.
The JAVA_HOME environment variable points to the file system location where
the JDK (Usually only JDK not JRE) installed.
Avoid using it. Prefer to have your java in PATH or managed by something like JVMS
finda java home
dirname $(dirname $(readlink -f $(which javac)))
find where JAVA_HOME is set
grep JAVA_HOME /etc/environment /etc/bash.bashrc /etc/profile.d/* /etc/profile
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