1    package net.rmi; 
2     
3    import java.io.Serializable; 
4    import java.rmi.RMISecurityManager; 
5    import java.rmi.RemoteException; 
6    import java.rmi.server.UnicastRemoteObject; 
7     
8    public class ComputeServer 
9        extends UnicastRemoteObject 
10       implements Computable { 
11    
12     // rmi servers must have 
13     // a public constructor that throws a 
14     // RemoteException 
15     public ComputeServer() throws RemoteException { 
16     } 
17    
18     //in rmi, parameters must be serializale 
19     public void println(Serializable o) 
20         throws RemoteException { 
21       System.out.println(o); 
22     } 
23    
24     //servers must gui.run RMIC 
25     public static void main(String[] args) 
26         throws RemoteException { 
27       System.setSecurityManager( 
28           new RMISecurityManager()); 
29       try { 
30         lookUpServerAndBindWithRegistry(); 
31       } catch (Exception e) { 
32         e.printStackTrace(); 
33       } 
34     } 
35    
36     private static void lookUpServerAndBindWithRegistry() throws java.rmi.RemoteException, java.net.MalformedURLException { 
37       ComputeServer cs = 
38           new ComputeServer(); 
39       String url = 
40           "rmi://localhost/ComputeServer"; 
41       java.rmi.Naming.rebind(url, cs); 
42       System.out.println("server started"); 
43     } 
44   } 
45