How can I install an additional java on MacOS? I installed jdk8 and that works fine. but now I need a jdk7 installation for development purposes. When trying to install the old version via DMG file, i get a warning, that there is already a newer version of java installed and the installer quits.
Matching Java Virtual Machines (1):
1.8.0_20, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_20.jdk/Contents/Home
The cleanest way to manage multiple java versions on Mac is to use
homebrew-caskto install the versions of java
jenvto manage the installed versions of java
As seen on http://hanxue-it.blogspot.ch/2014/05/installing-java-8-managing-multiple.html , these are the steps to follow.
Add the "caskroom/versions" tap to homebrew using:
brew tap caskroom/versions
Then you can look at all the versions available:
brew cask search java
Then you can install the version(s) you like:
brew cask install java7 brew cask install java6
And add them to be managed by jenv as usual.
jenv add <javaVersionPathHere>
I think this is the cleanest & simplest way to go about it.
Another important thing to note, as mentioned in Mac OS X 10.6.7 Java Path Current JDK confusing :
For different types of JDKs or installations, you will have different paths
On Mac OS X Mavericks, I found as following:
1) Built-in JRE default:
2) JDKs downloaded from Apple:
3) JDKs downloaded from Oracle: