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I am run my java code in IntelliJ it is showing this error:

Error: Could not find or load main class CWA_01_INTRO Caused by: java.lang.ClassNotFoundException: CWA_01_INTRO

whereas the same code is running in vs code, I am looking for your affirmative help.

I have asked some chatgpt , pieces copilot but not getting a summarize solution, rather than list of causes.
Here is my code

import java.util.*;
public class CWA_01_INTRO {

    public static void main(String[] args) {
        Scanner as = new Scanner(System.in);
        System.out.println("Hello World ");
       
        as.close();
    }
}
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  • 1
    Post entire error message. Don’t make us guess! Commented Oct 11, 2024 at 14:01
  • 1
    Post details as edits to your Question, not as Comments. Commented Oct 11, 2024 at 18:03

1 Answer 1

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Mark src as Sources Root: Right-click on the src folder, select Mark Directory as → Sources Root.

Check Run Configuration: Go to the run configuration dropdown, select Edit Configurations, and ensure Main class is set to CWA_01_INTRO.

Rebuild the Project: Go to Build → Rebuild Project.

Check Output Path: In File → Project Structure, verify the output path is correct.

Invalidate Caches: Go to File → Invalidate Caches / Restart, and choose Invalidate and Restart.

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1 Comment

thanks for your answer but in project structure I made my folder as source file then program is running just to confirm I have to make every folder as source file or make parent folder as source file.

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