JDK in Mac OS X

Question

I found two JDK in my Mac, one is in the path:'/System/Library/Java/JavaVirtualMachines/1.6.0jdk' another is in the path:'/Library/Java/JavaVirtualMachines/1.7.0jdk'

what's the different? why there are two?

Answer 1

The /System/Library/Java/JavaVirtualMachines/1.6.0jdk is the JDK that Apple used to distribute with their operating system. They have since stopped providing a JDK and have left it up to the owner of the Java platform, Oracle, to provide the latest JDK and /Library/Java/JavaVirtualMachines/1.7.0jdk is the JDK provided by Oracle.

The difference is simply the version and vendor (provider) of the JDK. It's perfectly fine to have multiple JDKs on your system.