timeserver.java

客户端从服务器获取时间

import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.net.*;
import java.io.*;

public class timeServer{
	public static void main(String[] args){
		InputStreamReader is = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(is);
		String portNum = "1234",registryURL;
		try{
			int RMIPortNum = 2345;
			startRegistry(RMIPortNum);
			timeServerImpl exportedObj = new timeServerImpl();
			registryURL = "rmi://localhost:"+RMIPortNum+"/callback";
			Naming.rebind(registryURL,exportedObj);
			System.out.println("Callback server ready.");
		}
		catch(Exception re){
			System.out.println("Exception in CallbackServer.main: "+re);
		}
	}
	private static void startRegistry(int RMIPortNum)throws RemoteException{
		try{
			Registry registry = LocateRegistry.getRegistry(RMIPortNum);
			registry.list();
		}
		catch(RemoteException e){
			Registry registry = LocateRegistry.createRegistry(RMIPortNum);
		}
	}
}