Redhat Extension not able to recognise java module

[dishask99]

2025-03-27 17:16:37.962 [warning] [redhat.java] Accessing a resource scoped configuration without providing a resource is not expected. To get the effective value for '[java]', provide the URI of a resource or 'null' for any resource.
2025-03-27 17:16:42.731 [error] Error: data-router does not exist
at /Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1069237
at re (/Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1069531)
at /Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1064315
at Immediate. (/Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1064335)
at process.processImmediate (node:internal/timers:483:21) java.execute.workspaceCommand {"value":"redhat.java","_lower":"redhat.java"}
2025-03-27 17:17:35.442 [info] ExtensionService#_doActivateExtension vscode.npm, startup: false, activationEvent: 'onTerminalQuickFixRequest:ms-vscode.npm-command'
2025-03-27 17:17:40.478 [error] Error: data-router does not exist
at /Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1069237
at re (/Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1069531)
at /Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1064315
at Immediate. (/Users/dishas/.vscode/extensions/redhat.java-1.40.0-darwin-arm64/dist/extension.js:2:1064335)
at process.processImmediate (node:internal/timers:483:21) java.execute.workspaceCommand {"value":"redhat.java","_lower":"redhat.java"}
2025-03-27 17:19:39.868 [info] Extension host terminating: renderer closed the MessagePort

Build is successfull also java home is set -

[INFO]
[INFO] --- surefire:3.1.2:test (default-test) @ data-router ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- jar:3.3.0:jar (default-jar) @ data-router ---
[INFO] Building jar: /Users/dishas/work/data-router/target/data-router-0.1.jar
[INFO]
[INFO] --- spring-boot:3.2.4:repackage (default) @ data-router ---
[INFO] Replacing main artifact /Users/dishas/work/data-router/target/data-router-0.1.jar with repackaged archive, adding nested dependencies in BOOT-INF/.
[INFO] The original artifact has been renamed to /Users/dishas/work/data-router/target/data-router-0.1.jar.original
[INFO]
[INFO] --- install:3.1.1:install (default-install) @ data-router ---
[INFO] Installing /Users/dishas/work/data-router/pom.xml to /Users/dishas/.m2/repository/com/adobe/di/arts/data-router/0.1/data-router-0.1.pom
[INFO] Installing /Users/dishas/work/data-router/target/data-router-0.1.jar to /Users/dishas/.m2/repository/com/adobe/di/arts/data-router/0.1/data-router-0.1.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.415 s
[INFO] Finished at: 2025-03-27T17:17:48+05:30
[INFO] ------------------------------------------------------------------------
dishas@MacBook-Pro-7 data-router % java -v
Unrecognized option: -v
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
dishas@MacBook-Pro-7 data-router % java -version
openjdk version "21.0.6" 2025-01-21
OpenJDK Runtime Environment Homebrew (build 21.0.6)
OpenJDK 64-Bit Server VM Homebrew (build 21.0.6, mixed mode, sharing)
dishas@MacBook-Pro-7 data-router % echo $JAVA_HOME
/Users/dishas/.jenv/versions/21

[rgrunber]

The first warning I see as well, and I don't think is harmful. The first bit looks like just error in the extension host log. Are those errors preventing something in particular ? What actions are you taking when this occurs ?

[dishask99]

yes @rgrunber , I am not able to navigate through the code.
While running the application file I am getting -

and I am not able to run the application

[dishask99]

My project folder looks like this -

and the IDE is not detecting any Java file

[dishask99]

[rgrunber]

Does the problems view contain any errors ? Is there anything on the bottom toolbar of VS Code to indicate the status of the project import ? Ideally you'd want to see the Java status is "Ready".

[dishask99]

[dishask99]

!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jdt.ls.core".
!STACK 1
Java Model Exception: Error in Java Model (code 969): tssapp does not exist
at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:546)
at org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfoCheckExistence(JavaModelManager.java:2549)
at org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(JavaProject.java:2361)
at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:2434)
at org.eclipse.jdt.internal.core.JavaProject.getAllPackageFragmentRoots(JavaProject.java:1806)
at org.eclipse.jdt.internal.core.JavaProject.getAllPackageFragmentRoots(JavaProject.java:1797)

[dishask99]

similar issue - #3991

[ydnactnim]

After updating to version 1.41.0, I encountered the same issue.
For now, reverting to version 1.40.0 seems to be a good workaround.

[rgrunber]

@dishask99 , is there more to the stacktrace beyond that last line , at org.eclipse.jdt.internal.core.JavaProject.getAllPackageFragmentRoots(JavaProject.java:1797) ?

@dishask99 @ydnactnim can you share the project that you're seeing this with ?

[rgrunber]

I would try using 1.41.1. There were some issues with 1.41.0 that have since been fixed. Also, if you're running into problems with the vscode-java-test extension, there was also a 0.43.1 release put out to fix some of those.

[ydnactnim]

I would try using 1.41.1. There were some issues with 1.41.0 that have since been fixed. Also, if you're running into problems with the vscode-java-test extension, there was also a 0.43.1 release put out to fix some of those.

@rgrunber
Sorry for the late response.
I’m coding for algorithm problems using a project without a build tool in VS Code.
However, since version 1.41.0, I’ve been encountering the following error.
Here is my src/Main.java and debugging error message.

import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.IOException;

public class Main {
    public static void main(String[] args) throws IOException {
        InputStreamReader ISR = new InputStreamReader(System.in);
        BufferedReader BR = new BufferedReader(ISR);

        BR.close();
        ISR.close();
    }
}

>> Error: Could not find or load main class Main
>> Caused by: java.lang.ClassNotFoundException: Main

As suggested, I tried updating to version 1.41.1, but the same issue still occurs.
So I reverted back to version 1.40.0, which works fine.

Here is my settings.json configuration.

{
    "java.project.sourcePaths": [
        "src"
    ],
    "java.project.outputPath": "bin",
    "java.project.referencedLibraries": [
        "lib/**/*.jar"
    ],
    "java.debug.settings.onBuildFailureProceed": true
}

Please let me know if you need any more information.

[rgrunber]

Seems to be working for me. What happens if you run the command Java: Clean Java Language Server Workspace and select "Reload and delete".

[ydnactnim]

When I followed the method you mentioned earlier, the issue wasn't resolved at the time.
However, I tried it again recently, and this time it worked.
I believe it might have been due to my own inexperience.
The issue is now resolved. Thank you for your attention and your response. :)