🚀 go-pugleaf

It reports the following error:
----------------------------
Exception in thread "main" java.lang.NoClassDefFoundError:
testingstrings/Main


Now the funny thing is that I've done everything 100% (as far as I can see,
but I may be dum :) as explained to avoid this..


This is my code:
----------------
package testingstrings;
import java.io.*;

/**
 * Title:        Testing Strings
 * Description:  N/A
 * Copyright:    Copyright (c) 2000
 * Company:      N/A
 * @author Thomas Schulz
 * @version 1.0
 */

public class MainClass {

  public static void main(String args[]) {
    byte a[]=null;

    try {
      System.in.read(a);
    }
    catch(IOException ioex){
      ioex.printStackTrace();
    }
  }

  public MainClass() {
  }

}



This is dir setup:
----------------
Output path:
D:/programmering/current projects/Mine/JBuilder/testingstrings/classes
Backup path:
D:/programmering/current projects/Mine/JBuilder/testingstrings/Backups
Working directory:
D:/programmering/current projects/Mine/JBuilder/testingstrings
Source:
D:/programmering/current projects/Mine/JBuilder/testingstrings/Dev



This is how I try to execute it:
-----------------------------
In console I place myself in
D:\programmering\current projects\Mine\JBuilder\testingstrings\classes
I then enter "java testingstrings.Main"




Obviously I must be doing something wrong.. But what?
I can see JBuilder places e.g. the files in the classes directory like this:
D:\programmering\current
projects\Mine\JBuilder\testingstrings\classes\testingstrings\MainClass.class



I hope someone can help...?
Regards
Thomas Schulz