Java extension: Failed to get sources. Instead, stub sources have been generated by the disassembler.

While editing my Java code, I am not getting the Javadocs from JDK’s source code whenever I hover an element or do a [CTRL]+[LEFT CLICK]. Instead, I am getting code generated by a disassembler.

// Failed to get sources. Instead, stub sources have been generated by the disassembler.
// Implementation of methods is unavailable.

The source file is there at:

"D:\Program Files\Java\jdk-17.0.1\lib\src.zip"

Environment

• Operating System: Windows 11
• JDK version: openjdk version “17.0.1” 2021-10-19 OpenJDK Runtime Environment (build 17.0.1+12-39) OpenJDK 64-Bit Server VM (build 17.0.1+12-39, mixed mode, sharing)
• Visual Studio Code version: 1.63.2
• Java extension version: Language Support for Java™ by Red Hat v1.2.0

Steps To Reproduce

1. Create a simple java application.
2. Hover a method like System.out.print() to see its Javadocs.
3. While holding the CONTROL key, LEFT-CLICK the String class source code.

Current Result

1. While hovering the method you will see generic information like void java.io.PrintStream.println(String arg0)
2. When CONTROL+RIGHT-CLICKING to open the source code you will see a decompiled version instead of the JDK’s documented source code.

Expected Result

1. While hovering the method you should see information like
   
2. When CONTROL+RIGHT-CLICKING to open the source code you should see the JDK’s documented source code.

Additional Informations

VS Code console.txt vscode-app-1641621696309.log

[joaotesch]

I solved it by configuring the same path as JAVA_HOME in the “java.jdt.ls.java.home” config, from the settings.json file.

My JAVA_HOME:

settings.json config:

[GustavoASC]

After configuring settings.json like @joaotesch suggested, I needed to clean the workspace cache with the command:

Java: Clean Java Language Server Workspace