This question already has an answer here:

BACKGROUND: I went to oracle.com and I downloaded the JDK. I moved the file to /usr/local/java. Afterwards, I set the path variable and JAVA_HOME in /etc/environment.

PROBLEM: I have a jar file in my downloads directory. Although I can go to terminal and use "java -jar" and it works, I want to be able to double click and execute the jar file.

marked as duplicate by muru, karel, Zanna, user.dz, TheWanderer Nov 28 '16 at 12:38

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Sorry if the question sounds stupid and is obvious, I just installed ubuntu yesterday. – user623965 Nov 27 '16 at 4:27
  • Right click on .jar file
  • Select "Properties" tab
  • Select your Java Runtime
  • Press Set as default

enter image description here

Now you can open/execute any .jar file by double clicking them


If you cannot find "OpenJDK" option, maybe you don’t have the runtime environment installed. Use below command to install it.

sudo apt-get install openjdk-8-jre
  • It doesn't show up in the "open with" – user623965 Nov 28 '16 at 4:46
  • @PrinceRajaruban See my edit – Jim Nov 28 '16 at 4:55