Multiple Java installations in Mac OS X Mavericks

Question

I downloaded JDK for Mac OS X 10.9.1 from Oracle, but I had to install another Java from Apple site once more, as I couldn\'t launch eclipse with it.

These are two

Answer 1

Specify the JVM for Eclipse

You can specify JDK version for usage with Eclipse in eclipse.ini. This will resolve problem with starting Eclipse.

-vm
/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/bin/java

Warning: Add this configuration before -vmargs.

Master your Java Environnement with jenv

It is much easier to maintain multiple JDK versions with jenv.

jenv is for a equivalent of rbenv, but for Java environnement. It allow to easily switch between several JDKs installations (already presents), and configure which one to use per project.

Eclipse JDK

• Setting JDK in Eclipse

Answer 2

It seems like that the oracle JDK can be just removed. For eclipse, I could add Installation A as a default JRE from Java Build Path -> JRE System Library -> Installed JRES -> Add ...