This post explains setting up IntelliJ IDEA to use the OpenJDK on Fedora. It is more for my personal future reference than anything else.

Download the things:

  1. Download the latest “Community” edition of IntelliJ IDEA from its website. cd to the directory where its downloaded, extract the tar ball and start the IDE:
    $ cd Downloads/
    $ tar xvf ideaIC-2021.3.3.tar.gz
    $ cd idea-IC-213.7172.25/bin
    $ ./
  2. Optionally, create a launcher for it:
    $ cat /usr/local/share/applications/idea.desktop 
    [Desktop Entry]
    Exec=sh /path/to/idea-IC-213.7172.25/bin/
  3. Install OpenJDK on Fedora:
    $ sudo dnf install -y java-11-openjdk java-11-openjdk-devel
  4. Open IntelliJ IDEA and click on “New Project”.
  5. If no SDK was detected by IntelliJ IDEA, click on the drop-down for “Project SDK”, enter the path /usr/lib/jvm/java-openjdk, and click OK.