App.java 不在项目 ss_d36b3017 的类路径上，不会编译成 a.class 文件Java(32)

Question

I am constantly facing this error and I have no idea how to fix it.

App.java is not on the classpath of project ss_d36b3017, it will not be compiled to a .class fileJava(32)

I am using Visual Studio Code for writing Java. I have set up the environment variable. javac --version and java --version and giving the expected results in PowerShell. I am using a very simple folder convention than is made by VS Code pallet. It has 1 folder (in drive D:)named project which has 3 folder named lib(This is vacant), src(This has the App.java)<readme.md It has no building tools. Code inside the App.java does not affect the issue.

I need some help.

Answer 1

Try the following two ways to see if question goes away.

1. Open Command Palette and choose Java: Clean Java Language Server Workspace

2. Right click the folder src and choose Add Folder to Java Source Path , then reload the window.