#Multiple java versions on mac mac os x

JDK 1.6 : in /System/Library/Frameworks/amework/Versions/CurrentJDK/Home.

In my case, here are the 3 JDK versions and the paths they get installed in:

However, in the command line, things get trickier. I use maven for a lot of the command line builds so what IвЂ™m going to present here refers to command line switching - if you use Eclipse, things are much easier, as Eclipse allows you to define upfront all of your JDKвЂ™s in the configuration section then you can assign a JDK / JRE per project.

#Multiple java versions on mac mac os x

So to save all of you in the same situation some time, I decided to post my solution for doing so online.ДЇirst and foremost, while it shouldnвЂ™t make any difference, itвЂ™s worth mentioning that I use Mac OS X 10.9.3 (Maverick). It turns out though that doing this can be a bit of a pain in the neck and requires a bit of a setup. As such, I prefer instead to have all the 3 versions installed on my Mac and switch in between them as and when I need it. Of course, I could take the approach of using just Java 8 and set compatibility mode (in maven or whatever) for the correct JDK version needed, however, this often highlights or hides problems specific with the JDK version used (when dealing with production projects especially I think itвЂ™s essential that developers mimic the production environment to the detail). And also IвЂ™ve been playing with the new and shiny Java 8 too (loving the lambda expressions!). Then I also have a bunch of open source projects I work on (read вЂњI stare at the code in github and donвЂ™t understand muchвЂќ рџ™‚ ) which are using JDK 1.7.

In my case, I am working on the (good) stuff we got going in Cognitive Match which is mainly JDK 1.6 (yes, yes, I know, I know, donвЂ™t worry, weвЂ™re upgrading that soon). If youвЂ™re a Java developer like me, working on a bunch of different projects at the same time, then you quite likely find yourself in the situation where you need to switch in between different JDK versions every time you switch context/project. Posted May 30th, 2014 by Liv & filed under Blogroll, News, Tech.

Running Multiple JDK Versions on Mac OS X