Question

I have created simple project with class Main and public static void main
and System.out.println(“Hello world”);
And after have configured as maven project.
After this main doesn’t work:

java.lang.NoClassDefFoundError: main/Main
Caused by: java.lang.ClassNotFoundException: main.Main
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Exception in thread "main"

Why this happens? How to fix?
Thanks.

Answer 1

maven clear project settings and also source folder.