How to Set JAVA_HOME / PATH variables Under Linux Bash Profile

Set JAVA_HOME / PATH for a single user

Login to your account and open .bash_profile file

$ vi ~/.bash_profile

Set JAVA_HOME as follows using syntax export JAVA_HOME=.set it as follows:

export JAVA_HOME=/opt/java/jdk1.8.0_40

Set PATH as follows:

export PATH=$PATH:/opt/java/jdk1.8.0_40/bin

Save and close the file. type the following command to activate the new path settings immediately:

source ~/.bash_profile

Set JAVA_HOME / PATH for all user

You need to setup global config in /etc/profile OR /etc/bash.bashrc file for all users:

 vi /etc/profile

Set JAVA_HOME as follows using syntax export JAVA_HOME=.set it as follows:

export JAVA_HOME=/opt/java/jdk1.8.0_40

Set PATH as follows:

export PATH=$PATH:/opt/java/jdk1.8.0_40/bin

After saving profile file, run the below command to make it work

. /etc/profile