卸载Java Mac OS X

Question

I am trying to remove JDK and JRE from my mac to revert back to an older version. I tried removing jdk folder from System/Library/Java/VirtualMachines as described here and i al so removed the Java applet as described here but i can still see java installed on my mac. Typing java -version gives me the following output:

        Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
        Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)

Typing ls -l /usr/bin/java gives the following output -

/usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java

I can see a lot of folders at this location and i don't really know which one to delete to uninstall Java completely and install an older version.

Answer 1

The Java 7 JDK is under /Library , not /System/Library .

Only Apple software is allowed to use /System , Java 7 and later are supplied by Oracle, so install under /Library/Java/JavaVirtualMachines . Deleting the appropriate JDK directory from there should be enough to complete the un-installation. In particular you should not touch anything under /System/Library/Frameworks , the stuff in there is either for backwards compatibility with apps that expect the old Apple Java installation paths from Java 5 and earlier, or for the stub mechanism that makes /usr/bin/java work (and delegate to whichever real JDK is the current target of JAVA_HOME ).