'java.lang.NoSuchMethodError' PLEAASE URGENT HELP NEEDED

Please i need urgent Help ... I have a Program .... I did it in My collegs's Lab
And it was working Fine I copied It ... Now Trying to Run It On my Computer
Which Is a Pretty Powerfull One ... but I keep Getting This Error :
"An Exeption Of Type 'java.lang.NoSuchMethodError' was not Handled"
And It Points out this :

[....Bla Bla Bla .....]

public static void main(String args[])
{
//m = new Main ();
//Application.run (m);
Application.run (new Main());
}

static Main m;
}




What Is the Problem???? I replaced All The Files Path So it Works ... and still having this error .... Does Anyone Knows What it means???
Any Help Would Be greatly Apretiated ...

- Regards -

Check out for method run in Application class.