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Jan 21, 2015 - 1 minute read - Java For Testers Mac

Switching between Java versions on a Mac

Original Blog Posting on [blog.javafortesters.com]

I just installed JDK 1.8 and had a problem:

  1. I could not figure out where JAVA_HOME was configured
  2. I wanted an easy way to switch between versions

After a bit of Google searching I learned about:

The above article explains:

  • /usr/libexec/java_home
    • displays the current Java version in use
  • /usr/libexec/java_home -V
    • displays all current Java versions available
  • /usr/libexec/java_home -v1.6
    • displays the path for the specific version

And in the above article, I found a comment describing aliases.

I added the following aliases into my .profile

alias java6="export JAVA_HOME=`/usr/libexec/java_home -v1.6`"
alias java7="export JAVA_HOME=`/usr/libexec/java_home -v1.7`"
alias java8="export JAVA_HOME=`/usr/libexec/java_home -v1.8`"

After executing “source .profile” the aliases became active.

And now I can easily switch between the various versions of Java.