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Getting rid of Java on a Mac

If you installed Java from Apple then you have the problem, that you have got a very old Version of Java.

$ java -version
java version "1.6.0_37"Java(TM) SE Runtime Environment (build 1.6.0_37-b06-434-11M3909)
Java HotSpot(TM) 64-Bit Server VM (build 20.12-b01-434, mixed mode)

Java get’s installed as a .pkg file and here is how to figure out which files this .pkg installed (unfortunately I haven’t found out where the pre- and postflight scripts are so you have to hope they don’t do anything nasty).

First things first; some essential Java files are on your system after a fresh installation, so we have to figure out what files are there from the beginning. To do this we have look into


Right on top you can see that the “OS X Installer” installed two packages called “JavaTools” and “JavaEssentials” so we don’t touch them.

Now we try to figure out all Java .pkgs that were installed:

grep -i Java /Library/Receipts/InstallHistory.plist

So we know that we have to uninstall: “JavaForMacOSX107”, “JavaSecurity” and “JavaMDNS”.

To get to the files that where installed by those packages we call:

cd /private/var/db/receipts
lsbom -s

Last thing to do is remove the three .bom and three .plist files from: /private/var/db/receipts.

You are done


Two folder to worth looking at are: