It's safe to remove them once you know everything else works.
It is not enough to rename the jar files, because Java will open every jar in that folder - I moved mine into a sub-directory. If you don't, you'll get the infamous message about the wrong version of tools.jar (see Builds failing after upgrading to Java7, Missing Tools.jar and bad class versions). I recently switched over to using JDK 1.7, deleting JDK 6 from my MacBook entirely (I also had traces of JDK 5 - this laptop has been updated a few times).ġ) download the latest from Oracle ( ) and install it.Ģ) Remove (using rm - if you've got backups, you can revert if you make a mistake) all the JDK6 and JRE6 files.Īt this stage, you should see: % ls /Library/Java/JavaVirtualMachines/ģ) In the folder /Library/Java/Extensions/, you'll need to remove all the old jar files, the ones that correspond to other releases of Java. Managing Java versions on Mac OSX is a nightmare.
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