I have installed Java-8. Now I wanted to go back to Java-7 by default so I type in...
/usr/libexec/java_home -v 1.7.0_40 --exec java -version
/usr/libexec/java_home -v 1.7.0_40 --exec javac -version
But I still see...
java -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b108)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b50, mixed mode)
This does work...
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
But I would like a more permanent solution.
Anyone see what I am doing wrong?
Answer
Easily Switch Versions
Install versions 1.6, 1.7, 1.8 in any order. Note: I believe the last one installed determines which one will be used for browser plugins, I'm not going to care about changing those below.
Then, add to your
~/.bashrc
or~/.bash_profile
, or where ever:#!/bin/bash
export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)
setjdk() {
export JAVA_HOME=$(/usr/libexec/java_home -v $1)
}Verify the change via
java -version
$ java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
$ setjdk 1.6
$ java -version
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
$ setjdk 1.8
$ java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
Obviously the change is only for the duration of the shell. But you can see where you can set it globally now.
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