No main class found

[DMAyuquina]

Apache NetBeans version

Apache NetBeans 21

What happened

I tried to create a project in Netbeans for my university, but for some reason the program does not detect a main class in the project. As much as I tried to fix the problem and try to manually configure the main class, I could not do anything because Netbeans does not detect any Java file that I create. Even if I tart directly from the project properties.

Language / Project Type / NetBeans Component

Java/Study Project/Java main class

How to reproduce

Create a new project normally with Java Ant. When the Java class was generated, although it compiles correctly, when running it, the program does not detect any main class.

Did this work correctly in an earlier version?

No / Don't know

Operating System

Windows 11

JDK

22

Apache NetBeans packaging

Apache NetBeans provided installer

Anything else

I installed it recently and it does not work the right way. According to the instructions I followed I did not move anything that can affect its operation and still the error is persistent. I uninstalled it and reinstalled it but it didn't work either.

Are you willing to submit a pull request?

Yes

[mbien]

My guess is that you renamed or moved the class file which had the main method while the ant project has still the old location configured.

you can change it in the project properties. right click on ant project -> properties -> run. Make sure that the class has a valid main method.

If you create a new project and hit play it should work out of the box.

[matthiasblaesing]

I notice, that you use NB21 with JDK22. There are known issues of NB21 on JDK22. Please either wait for NB22, which is currently being released or use NB21 with JDK21.