1    package net.rmi.armi; 
2     
3    import java.util.*; 
4     
5    public class ArmiHelloWorldTest 
6            implements Observer { 
7     
8        public ArmiHelloWorldTest() { 
9        } 
10       public void update(Observable obs, 
11                          Object arg){ 
12               System.out.println(arg); 
13       } 
14       public static void main(String args[]){ 
15           ArmiHelloWorld ashw 
16                   = new ArmiHelloWorld(); 
17           ArmiHelloWorldTest ashwt 
18                   = new ArmiHelloWorldTest(); 
19           ashw.addObserver(ashwt); 
20           ashw.getMsg(); 
21           ashw.testGetMsg(); 
22       } 
23   } 
24