switchjdk

switchjdk is a simple shell script aimed to ease switching between different JDK's. When switching to a JDK, it does two main things:

• set JAVA_HOME.
• edits your PATH variable and replaces the old 'JAVA_HOME/bin' by the new one.

How to install

Download common_functions.sh and put it in a directory that is in your PATH (eg /usr/local/sbin). Download switchjdk.sh and put it in a directory that is in your PATH (eg /usr/local/sbin). Edit switchjdk.sh and configure it to switch your installed JDKs.

How to use

Just invoque switchjdk.sh 11 (or whatever numbers you have configured).

To make it more confortable I added a few aliases to my environment:

$ vi ~/.bash_profile

  # Easily switch JDKs for the current Bash session
  alias jdk7='. setjdk.sh 7'
  alias jdk8='. setjdk.sh 8'
  alias jdk11='. setjdk.sh 11'

Then from the command line you just need to run jdk8, jdk11, ... in order to switch.