Wednesday, November 21, 2012

Installing JDK 7 on Mac OS X


To get JDK 7 up,
Surgery required.  So, I headed over to:
/System/Library/Frameworks/JavaVM.framework/Versions
This is where the system jvm's are stored.  You'll notice a symbolic link for CurrentJDK.  It probably points to:
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
You're going to want to point that to the new JDK, which java_home tells us is located in:
bone@zen:/usr/libexec$ /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home
So, the magic commands you need are:
bone@zen:/System/Library/Frameworks/JavaVM.framework/Versions$ sudo rm CurrentJDK
bone@zen:/System/Library/Frameworks/JavaVM.framework/Versions$ sudo ln -s /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/ CurrentJDK
Then, you should be good:
bone@zen:/System/Library/Frameworks/JavaVM.framework/Versions$ java -version 
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02, mixed mode)

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Thanks. java_home was the command I needed to figure out the library path :-0

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