JD-GUI macOS: No suitable Java version found on your system!

When installing JD-GUI on macOS via brew install jd-gui

JD-GUI might complain about not finding a Java 1.8 version or above, this is because brew creates a shell script to start JD-GUI and it’s not finding it, the fix:

• Go to your Applications folder in finder
• Right click > Show Package Contents
• Go to Contents > MacOS, you should find a “universalJavaApplicationStub.sh”
• Edit this in your favorite text editor
• Add to the top under #!/bin/sh:
  • export JAVA_HOME=$(/usr/libexec/java_home -v1.8)

It may look like this:

https://user-images.githubusercontent.com/49558207/99136179-89772400-265e-11eb-86fc-04ebb7764aec.png

From GitHub @ly8388

…or if the image isn’t visible:

Error Launching ‘JD-GUI’
No suitable Java version found on your system!
This program requires Java 1.8+
Make sure you install the required Java version.

References:

BigSur ERROR launching ‘JD-GUI’ · Issue #332 · java-decompiler/jd-gui (github.com)