How to install Java JDK (Java Development kit 12) on Mac OS. Download and install Java on Mac OS X. We will also update the JAVAHOME environment variable ne. I am looking for the path the the JRE file on Mac OS X 10.6.8. Or is there no such file? Is JRE just slang for an idea or concept? Java Runtime Environment is a real thing. Does it have a file? Check you have the needed version of Java, by typing “java -version”. JAVAHOME is essentially the full path of the directory that contains a sub-directory named bin which in turn contains the java. For Mac OSX – it is /Library/Java/Home; Set JAVAHOME using this command in Terminal: export JAVAHOME=/Library/Java/Home. Install Maven on Mac. Maven is the most widely used build and project dependency management tool for Java-based applications. We can install Maven on Mac OS using a package manager such as HomeBrew or through XCode Command Line Tools. Mac OS X doesn’t have an obvious way to view the exact text based path to a folder (otherwise known as a directory) in the finder window. You can have it show a graphical path, but getting just the text based path to a directory (for use in the Terminal for example) requires a couple of extra steps.

Trying to run a Java application on your Mac and need to set your JAVA_HOME? Follow the instructions below to quickly and easily do it:

Open Terminal
Confirm you have JDK by typing “which java”. It should show something like /usr/bin/java.
Check you have the needed version of Java, by typing “java -version”.

JAVA_HOME is essentially the full path of the directory that contains a sub-directory named bin which in turn contains the java.
For Mac OSX – it is /Library/Java/Home

Set JAVA_HOME using this command in Terminal: export JAVA_HOME=/Library/Java/Home
echo $JAVA_HOME on Terminal to confirm the path
You should now be able to run your application

Note that this sets JAVA_HOME only for this session. If you want it to persist, you will have to add the command to your ~/.profile file. Below are instructions on how to accomplish this instead:

Find Java Home Mac

Open up Terminal.app (Applications >> Utilities >> Terminal)
Type: emacs .profile
add this to the end of the .profile file:

JAVA_HOME=/Library/Java/Home
export JAVA_HOME;

Save and exit emacs (ctrl-x, ctrl-s; ctrl-x, ctrl-c)
Open a new Terminal window (cmd-n) and type: $JAVA_HOME/bin/java -version

Mac Jdk Location

If you see something like:
java version “1.5.0_16″
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284)
Java HotSpot(TM) Client VM (build 1.5.0_16-133, mixed mode, sharing)

Mac Path For Java Runtime

Then you’ve successfully set your JAVA_HOME environment variable to the binary stored in /Library/Java/Home/bin/java