java – How to set JAVA_HOME in Linux for all users

java – How to set JAVA_HOME in Linux for all users

  1. find /usr/lib/jvm/java-1.x.x-openjdk
  2. vim /etc/profile

    Prepend sudo if logged in as not-privileged user, ie. sudo vim

  3. Press i to get in insert mode
  4. add:

    export JAVA_HOME=path that you found
    
    export PATH=$JAVA_HOME/bin:$PATH
    
  5. logout and login again, reboot, or use source /etc/profile to apply changes immediately in your current shell

For all users, I would recommend creating a file in /etc/profile.d/java_home.sh the following lines

# Set JDK installation directory according to selected Java compiler

export JAVA_HOME=$(readlink -f /usr/bin/javac | sed s:/bin/javac::)

This will update dynamically and works well with the alternatives system. Do note though that the update will only take place in a new login shell.

java – How to set JAVA_HOME in Linux for all users

You could use /etc/profile or better a file like /etc/profile.d/jdk_home.sh

export JAVA_HOME=/usr/java/jdk1.7.0_05/

You have to remember that this file is only loaded with new login shells.. So after bash -l or a new gnome-session and that it doesnt change with new Java versions.

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