Installing Eclipse on OSX Mountain Lion

It seems that Eclipse won't run on JDK1.7 on OSX at the start.  It is looking for JDK1.6.

Fortunately I found the answer somewhere in StackExchange.
sudo mkdir /System/Library/Java/JavaVirtualMachines
sudo ln -s /Library/Java/JavaVirtualMachines/1.7.0.jdk /System/Library/Java/JavaVirtualMachines/1.6.0.jdk