Java RMI Services Scan

package es.cixtec.pruebas.rmi;  
 import java.rmi.ConnectException;  
 import java.rmi.RemoteException;  
 import java.rmi.registry.LocateRegistry;  
 import java.rmi.registry.Registry;  
 /**  
  * Display names bound to RMI registry on provided host and port.  
  */  
 public class RMIScan {  
      private final static String NEW_LINE = System.getProperty("line.separator");  
      /**  
       * Main executable function for printing out RMI registry names on provided  
       * host and port.  
       *  
       * @param arguments  
       *      Command-line arguments; Two expected: first is a String  
       *      representing a host name ('localhost' works) and the second is  
       *      an integer representing the port.  
       */  
      public static void main(final String[] arguments) {  
           final String host = "localhost";  
           int port = 1099;  
           try {  
                final Registry registry = LocateRegistry.getRegistry(host, port);  
                final String[] boundNames = registry.list();  
                System.out.println("Names bound to RMI registry at host " + host  
                          + " and port " + port + ":");  
                for (final String name : boundNames) {  
                     System.out.println("\t" + name);  
                }  
           } catch (ConnectException connectEx) {  
                System.err  
                          .println("ConnectionException - Are you certain an RMI registry is available at port "  
                                    + port + "?" + NEW_LINE + connectEx.toString());  
           } catch (RemoteException remoteEx) {  
                System.err.println("RemoteException encountered: "  
                          + remoteEx.toString());  
           }  
      }  
 }