messagecenter.java

SSD8的exam2答案

import java.rmi.*;
public interface MessageCenter extends Remote {
	String register( String userName,  String password) throws RemoteException;
    String showUsers() throws RemoteException;
    String checkMessage( String uName, String psw)throws RemoteException;
    String leaveMessage(String sender,String receiver,String message)throws RemoteException;
}