MicroEJ freezes on Mac

Hello. I used the installer : MicroEJ-Studio-Installer-MacOS-4.1.4.

My device have Java v1.8.0_162 and the following :
Java™ SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot™ 64-Bit Server VM (build 25.162-b12, mixed mode)
My device is a High Sierra version 10.13.3.

When I try to run MicroEJ Studio, a window is displayed asking me to choose a workspace but … it does not answer ! I can click on any button, nothing will happen, I have to force it to shut down via the menu bar.

Does someone knows why ? What can I do to make it work ?

1 Like


I managed to reproduce the same issue on a similar configuration. It is quite strange, the -debug option does not provide additional information, and bypassing the workspace selection with -data option results in about the same issue but later on.

Do you have other Eclipse products/IDE working on your computer?


I don’t have other Eclipse-based products on my device.
As IDE I have Android Studio, Visual Code Studio and xCode.

I saw several people having this kind of issue with Eclipse based tools.
Usually, the solution is to downgrade the JDK version to 1.8.0_131 (or 1.8.0_151).

I hope that helps.

It would be great if MicroEJ made a release via something like Lando so that problems like this can be eliminated. I hate seeing developers fighting the environment where tools exist that can help overcome these difficulties.