MAC OS - Set JAVA

MAC OS - Set JAVA_HOME

While running Java applications, sometimes you may have to set JAVA_HOME environment variable. Here are the instructions to quickly set JAVA_HOME on your MAC OS.

Open Terminal
To Confirm if you have Java

Type command: "which java"
Hit Enter/Return button
The command should return something like this: /usr/bin/java

To get location of Java (detailed steps are documents here)

Type command: /usr/libexec/java_home
Hit Enter/Return button
The command should return something like this: /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home

To Set JAVA_HOME for single session

Type command: export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
Hit Enter/Return button
Type command to verify: echo $JAVA_HOME

To Set JAVA_HOME permanently

Type command: vi ~/.bash_profile
This will open bash_profile file
Go to the end, and add following lines

JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
export JAVA_HOME;

Save the file
Restart Terminal
Type command to verify: echo $JAVA_HOME

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