The following methods in java.rmi.registry.LocateRegistry need to specify
acceptable port number range. They also need to specify the
behavior if the port number is out of the range or the host is unknown.

public static Registry getRegistry(int port)
public static Registry getRegistry(String host)
public static Registry getRegistry(String host, int port)
public static Registry getRegistry(String host, int port,RMIClientSocketFactory
csf)
public static Registry createRegistry(int port)
public static Registry createRegistry(int port, RMIClientSocketFactory csf,
                                        RMIServerSocketFactory ssf)