Project does not build due to build path being incomplete

None of my Java projects are being built properly by the language server.

All my projects are failing, even previously working projects

Fundamentally, I’m getting JRE errors such as The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files.

I’m unable to open standalone Java files, vanilla Java projects and packages, or Maven projects properly.

Here are some things I’ve tried:

• Cleaned and restarted the language server workspace multiple times.
• Set up the runtimes properly according to the guide.
• Set JAVA_HOME, java.home to jEnv symlinks .jenv/versions/14.0 and directly to the JDK installations themselves /usr/local/Cellar/openjdk/14.0.1/.
• Repeated the above steps with Java 11 and Java 14.
• Repeated the above steps with Java 11 Homebrew Cask installation of OpenJDK /Library/Java/JavaVirtualMachines/...
• Full wipe of VSCode and reinstalled everything, with the same results.

Additional Informations

I’m using jenv to manage my JDKs, and I’ve enabled the export and maven plugins. Compilation with javac and running with java works just fine.

Environment

• Operating System: macOS 10.15.6
• JDK version: 11.0.8, 14.0.1
• Visual Studio Code version: 1.48.2
• Java extension version: 0.65.0

Steps To Reproduce

1. Open a new .java file and define a class.

Log files

redhat.java/client.log.2020-08-26 client.log

Current Result

Plugin is unable to find JRE classes which causes compilation errors for the server.

Expected Result

Plugin should be able to link to JRE classes and compile properly, providing Intellisense without any errors.

[marcelweigle]

In VSCode open Command Palette: Java: Clean Java Language Server Workspace -> then restart VSCode fixed this issue for me

[snjeza]

@bryanmylee Could you try the following:

• stop VS Code
• run

rm -rf "/Users/bryan/Library/Application Support/Code/User/globalStorage/redhat.java"
rm -rf "/Users/bryan/Library/Application Support/Code/User/workspaceStorage"

• start VS Code