import java.io.*;
import java.net.*;

public class DailyAdviceServer {

    String[] adviceList = {"Take smaller bites", "Go for the tight jeans", "代码写得好，要饭要到老", "You might want to rethink"};

    public void go() {
        try {
            ServerSocket serverSock = new ServerSocket(4242);

            while(true) {
                Socket sock = serverSock.accept();
                PrintWriter writer = new PrintWriter(sock.getOutputStream());
                String advice = getAdvice();
                writer.println(advice);
                writer.close();
                System.out.println(advice);
            }
        } catch(IOException ex) {
            ex.printStackTrace();
        } finally {
            //
        }
    }
    private String getAdvice() {
        int random = (int) (Math.random() * adviceList.length);
        return adviceList[random];
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        DailyAdviceServer server = new DailyAdviceServer();
        server.go();

    }

}

import java.io.*;
import java.net.*;

public class DailyAdviceClient {
    public void go() {
        try {
            Socket s = new Socket("127.0.0.1", 4242);

            InputStreamReader streamReader = new InputStreamReader(s.getInputStream());
            BufferedReader reader = new BufferedReader(streamReader);

            String advice = reader.readLine();
            System.out.println("Today you should: " + advice);
            reader.close();

        } catch(IOException ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        DailyAdviceClient client = new DailyAdviceClient();
        client.go();

    }

}