Error when trying to open .jar extension app

By Karina Velazquez, 5 February, 2022

Forum
macOS and Mac Apps

Hi, I need to open a dot jar app and it keeps showing this message:
Operation can't be completed, . Unable to locate a Java Runtime.

I have downloaded the last java installation, have installed it like 10 times, , and it is supposed to have a java control center or icon under the macOS settings menu, but there is no such thing, so I think that java is not installing after all, or any suggestions?

I'm running macOS Monterey and

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Comments

By Meow meow j

1 year 7 months ago

I’m getting the same error, some backstory, I’ve been trying to get an accessibility mod for Minecraft, I found it, when I was installing it, it gives me the same error, I’ve also tried installing on windows, but Minecraft does not work properly, it keeps loading, anyway, I’m getting the same error, it might be a bug?

By Meow meow j

1 year 7 months ago

It seems like the error is, unable to locate the Java runtime on your system, please get help from, then it inserts a link to the Java website.

By dog

1 year 7 months ago

If you run in Terminal:

"which java"
(without the quotes)
what do you get?

By Karina Velazquez

1 year 7 months ago

well after typing that phrase, not sure if this is it but VoiceOver reads this:

/usr/bin/java
anas-air:~ kara$

By Unregistered User (not verified)

1 year 7 months ago

Does not the extension association option (in this case .jar) exist on mac?
This option exists on windows.
Cheers!

By dog

1 year 7 months ago

I get the same.

If you try to do what Zeirus mentioned,
1. Select the .jar file
2. Click Get Info
3. Select JavaLauncher