RuntimeException: Package jdk.internal.jimage.decompressor in module jrt.fs and module java.base

Question

Component Details - Using IntelliJ IDEA 2017.1 CE and jdk-9-ea+154

main() -

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Answer 1

I faced this issue for Spring Toolsuite 4, The metadata contains info about the present projects in the workspace, and common eclipse settings like font, codestyle, run configurations settings and sometimes information about modules used, eclipse plugins & eclipse log file for eclipse log errors, etc.

It does not contain valuable project info.

If this folder is deleted or changed manually, eclipse sees this directory as a new fresh workspace. You have to import the existing projects again and you are done.

If you want to keep your fonts, codestyle etc you can export / import these preferences for new workspaces or create a backup of .metadata.

In my case it worked for above issue of Package jdk.internal.jimage.decompressor in module jrt.fs and module java.base when i deleted .metadata folder, import project again, setup run configuration and everything started working.

Answer 2

To fix this problem, please follow the below steps. 1- Right-click on your class. 2 - Run AS-> Run Configurations 3. Click on main -> Click on the Browse option and Choose your project name in project. Click on the Apply button and after processing click on the Run button.

Answer 3

remove the .metadata folder, then restart eclipse.