Android IDE (AIDE) Support Forum

Help me plz what is error?

Show the error tab, so we can see it. But maybe it is a bug in AIDE

Remove the static modifier, since your class is not static. Or make it static as this :
public static class Main{
public static void main(String[] args){
System.out.println(“Hello world”);

No need to make the class static. Most if not all pure Java projects starts with public static void main in a simple public class( not static). Try restarting the AIDE or redoing the project