java学习笔记_网络

 1 import java.io.*;
 2 import java.net.*;
 3 
 4 public class DailyAdviceClient {
 5     public void go() {
 6         try {
 7             Socket s = new Socket("127.0.0.1", 4242);
 8             InputStreamReader streamReader = new InputStreamReader( s.getInputStream() );
 9             BufferedReader reader = new BufferedReader( streamReader );
10             
11             String advice = reader.readLine();
12             System.out.println("Today you should: " + advice);
13             reader.close();
14         } catch (IOException ex) {
15             ex.printStackTrace();
16         }
17     }
18     
19     public static void main(String[] args) {
20         DailyAdviceClient client = new DailyAdviceClient();
21         client.go();
22     }
23 }

 1 import java.io.*;
 2 import java.net.*;
 3 
 4 public class DailyAdviceServer {
 5 
 6     String[] adviceList = {
 7         "Take smaller bites",
 8         "Go for the tight jeans. No they do NOT make you lookk fat.",
 9         "One word: inappropriate",
10         "Just for today, be honest. Tell your boss what you *really* think",
11         "You might want to rethink that harcut."
12     };
13     
14     public void go() {
15         try {
16             ServerSocket serverSock = new ServerSocket(4242);
17             while (true) {
18                 Socket sock = serverSock.accept();
19                 PrintWriter writer = new PrintWriter(sock.getOutputStream());
20                 String advice = getAdvice();
21                 writer.println(advice);
22                 writer.close();
23                 System.out.println(advice);
24             }
25         } catch (IOException ex) {
26             ex.printStackTrace();
27         }
28     }
29     
30     private String getAdvice() {
31         int random = (int) (Math.random() * adviceList.length);
32         return adviceList[random];
33     }
34     
35     public static void main(String[] args) {
36         DailyAdviceServer server = new DailyAdviceServer();
37         server.go();
38     }
39 }