Problem while using the Eclipse IDE

[ragi singh]

Hi all,
I am trying to run my program in Eclipse IDE . however i am getting the following exception while running my program

java.lang.NoClassDefFoundError: HelloWorld
Exception in thread "main"

i have a main in my class . Can anyone help me to fix the problem ?

[Mathew Mintalm]

I guess it would be better to show us code first.

[ragi singh]

The code is as follows :-

 

public class Tux extends Thread{

	static String sName="vandeluer";
	public static void main(String[] args){
	
		Tux t= new Tux();
		t.piggy(sName);
		System.out.println(sName);
	}
	
	public void piggy(String sName){
		
		sName=sName+ " wiggy ";
		
		start();
		}
	
	public void run(){
		for(int i=0;i<4;i++){
		sName=sName+" " + i;
		}
	}
}

   

and the source of the code is :-http://www.jchq.net/mockexams/exam1.htm#Question%2021%29

[Campbell Ritchie]

So where is your HelloWorld class?

[Campbell Ritchie]

It ran all right when I tried it.