Environment:

• VS Code Version:1.104.0
• Extension Version: 0.29.2
• JDK Type & Version: JavaSE-1.8
• OS Type & Version:
  Windows
  Step to Reproduce:
  Open a folder containing Java code and a .classpath file.
  Ctrl+Shift+P, Java: Configure Java Runtime
  Navigate to classpath->libraries
  Click "Add Library"
  Select a .jar file using the picker
  The path to the picked jar file gets added as a relative path. Then, when you click Apply Settings, it throws an error.
  See example adding common-image-3.2.1.jar by choosing the file in a file picker and then clicking "Apply Settings":

Expected Behavior:
"Add Library" button picker adds the jar with the absolute path or otherwise avoids the error.
Actual Behavior:
"Add Library" button picker adds JAR with a a relative path, and clicking "Apply Settings" throws the error Failed to update classpaths: Error: Path for IClasspathEntry must be absolute:
Related Issues: