Many Java applications that use shell scripts to configure their environment use the
JAVA_HOME environment variable to start the correct version of Java, locate JRE JARs, and so on.
On OSX 10.6, the following paths seem to be valid for this variable
/Library/Java/Home /System/Library/Frameworks/JavaVM.framework/Home /System/Library/Frameworks/JavaVM.framework/Versions/Current
Some of these are symlinks to the actual current VM (as defined in the Java Preference pane).
But which one should be used—or is it okay to use any of them?
Does Snow Leopard still have
/usr/libexec/java_home? On 10.5, I just set
JAVA_HOME to the output of that command, which should give you the Java path specified in your Java preferences. Here’s a snippet from my
.bashrc file, which sets this variable:
I haven’t experienced any problems with that technique.
Occasionally I do have to change the value of
JAVA_HOME to an earlier version of Java. For example, one program I’m maintaining requires 32-bit Java 5 on OS X, so when using that program, I set
JAVA_HOME by running:
export JAVA_HOME=$(/usr/libexec/java_home -v 1.5)
For those of you who don’t have
java_home in your path add it like this.
sudo ln -s /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java_home /usr/libexec/java_home
Also, it`s interesting to set your PATH to reflect the JDK. After adding JAVA_HOME (which can be done with the example cited by ‘mipadi’):
Add also in ~/.profile:
P.S.: For OSX, I generally use .profile in the HOME dir instead of .bashrc
Nowadays Java seems to be installed in /Library/Java/JavaVirtualMachines
I’m on Mac OS 10.6.8
The easiest solution works for me is simply put in
$ export JAVA_HOME=$(/usr/libexec/java_home)
To test whether it works, put in
$ echo $JAVA_HOME
you can also test
$ which java
I tend to use
/Library/Java/Home. The way the preferences pane works this should be up to date with your preferred version.
That above works not any more in YOSEMITE for GRAPHICAL APPLICATIONS! Like eclipse, or anything started with Spotlight. (.bash_profile, launchd.conf works for terminal sessions only.)
Before starting eclipse, just open a terminal window, and give out the following command:
launchctl setenv JAVA_HOME /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
(With your installation path! Perhaps works with $(/usr/libexec/java_home) instead of the full path too.)
View the whole excellent article about the permanent solution here:
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sierra?
I am having MAC OS X(Sierra) 10.12.2.
I set JAVA_HOME to work on React Native(for Android apps) by following the following steps.
Open Terminal (Command+R, type Terminal, Hit ENTER).
Add the following lines to ~/.bash_profile.
Now run the following command.
You can check the exact value of JAVA_HOME by typing the following command.
The value(output) returned will be something like below.
I’ve found this stack to help, i was having the same issue and i could fix:
My java path was here:
and was needed to put into my
export JAVA_HOME=\"/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home\"
As other answers note, the correct way to find the Java home directory is to use
The official documentation for this is in Apple’s Technical Q&A QA1170: Important Java Directories on OS X: https://developer.apple.com/library/mac/qa/qa1170/_index.html
For me maven seems to work off the
echo "export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)" > ~/.mavenrc
I’m sure I picked it up on SO too, just can’t remember where.
Skipping Terminal setup since you mentioned applications, permanent system environment variable set up (works for macOS Sierra; should work for El Capitan too):
launchctl setenv JAVA_HOME $(/usr/libexec/java_home -v 1.8)
(this will set JAVA_HOME to the latest 1.8 JDK, chances are you have gone through serveral updates e.g. javac 1.8.0_101, javac 1.8.0_131)
Of course, change 1.8 to 1.7 or 1.6 (really?) to suit your need and your system
then paste this into the file
For Fish Shell users, use something like the following:
alias java7 "set -gx JAVA_HOME (/usr/libexec/java_home -v1.7)"