Can't resolve classpath for anything in app/src

[skylon07]

I have an android project I'm working on. For some reason, every .java file in app/src gives me this warning:

I've searched quite a bit online and have already tried things like:

• "Java: Clean Java Language Server Workspace"
• Modified .vscode/settings.json to include "app/src" in "java.project.sourcePaths"
• Modifying "sourceSets.main.java.srcDirs" in root build.gradle

None of this has worked for me. Everything (in my actual project -- screenshot was from test project) builds/runs in Android Studio, so I'm fairly certain the gradle build files are set up correctly.

I'm not sure if this is necessarily an issue with the extension (probably just configuration -- I'm a gradle noob after all), but I've exhausted all the troubleshooting information I could find on this topic.

Environment

• Operating System: macOS 12.6.8
• JDK version: 20.0.2
• Visual Studio Code version: 1.82.1
• Java extension version: 1.22.1

Steps To Reproduce

1. Create a new Android Project
2. Convert the MainActivity.kt file to a java file

   package com.example.myapplication;
   
   // import android.os.Bundle
   import androidx.activity.ComponentActivity;
   // import androidx.activity.compose.setContent
   // import androidx.compose.foundation.layout.fillMaxSize
   // import androidx.compose.material3.MaterialTheme
   // import androidx.compose.material3.Surface
   // import androidx.compose.material3.Text
   // import androidx.compose.runtime.Composable
   // import androidx.compose.ui.Modifier
   // import androidx.compose.ui.tooling.preview.Preview
   // import com.example.myapplication.ui.theme.MyApplicationTheme
   
   class MainActivity extends ComponentActivity {
       // fun onCreate(savedInstanceState: Bundle?) {
       //     super.onCreate(savedInstanceState)
       //     setContent {
       //         MyApplicationTheme {
       //             // A surface container using the 'background' color from the theme
       //             Surface(
       //                 modifier = Modifier.fillMaxSize(),
       //                 color = MaterialTheme.colorScheme.background
       //             ) {
       //                 Greeting("Android")
       //             }
       //         }
       //     }
       // }
   }
   

3. Observe the "...not on classpath..." warning

Test Project.zip

Current Result

The warning displays despite gradle being able to build it

Expected Result

Packages resolve correctly in app/src and this warning is not displayed

[skylon07]

I see this is a duplicate of #396; closing this for reasons mentioned there...

[laheller]

I have the same problem. Sad that it's not working...