Jar file will not run.

[Lil_Aziz1]

This is what my manifest file contains:

manifestAddition.txt (it does end with a carriage return):

Main-Class: sudoku.DriverProgram

I also tried this for manifestAddition.txt (it also ends with a carriage return):

Main-Class: sudoku/DriverProgram

Also tried both manifestAddition code above without a carriage return. Still fails
sudoku.DriverProgram:

package sudoku;

public class DriverProgram {
	public static void main(String[] args) {
		SudokuWorld world = new SudokuWorld();
		world.display();
	}
}

This is what I'm doing in the cmd:


This is the error I get:


What am I doing wrong?

Thanks in advance.

[Lil_Aziz1]

Idk why but it started to work after I recompiled all the classes.