Cannot run Main class in Intellij

Question

I have the following project structure

-ProjectRoot
---src
------Main
------examples
---libs

My src folder is marked as sources in Intellij.

Now, when I want to run Main class, I get the following error:

Exception in thread "main" java.lang.ClassNotFoundException: Main

Any ideas on what am I doing wrong?

Here is my main class:

public class Main {
    public static void main(String[] args) {
        System.out.println("hello world");
      }
    }

It doesn't have any package statements.

Typically IntelliJ uses `src/main/java/` as the source folder. Does `Main` mean `Main.java` or `Main`, the directory? — OneCricketeer, Oct 16 '16 at 08:17

xenteros · Accepted Answer · 2016-10-16T08:24:38.607

7

Clean the project, edit run configuration, choose the main class manually again. This probably wouldn't be needed if you had src/main/java structure.

edited Oct 16 '16 at 08:24

answered Oct 16 '16 at 08:15

xenteros

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Could also try just creating a new project and copy&paste old src files to it. – Essej Oct 16 '16 at 08:21
2

Yes, in this case yes, but in the future, when someone comes here with same problem with huge project, he won't :) – xenteros Oct 16 '16 at 08:22

Cannot run Main class in Intellij

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