Java Socket communication

1  package com;
 2  
3  import java.io.* ;
 4  import java.net.ServerSocket;
 5  import java.net.Socket;
 6  
7  /** 
8  * Socket Server
 9  * <p>
 10  * Created by Administrator on 2018 /5/2.
 11   */ 
12  public  class Server {
 13  
14      public  static  void main(String[] args) {
 15  
16          try {
 17  
18              // 1. Initialize the server socket connection and listen for socket requests on port 8888
19             ServerSocket serverSocket = new ServerSocket(8888);
20 
21             System.out.println("****** I am Server, now begin to wait the client ******");
22             Socket socket = serverSocket.accept();
23 
24             // 2.server接收消息
25             InputStream inputStream = socket.getInputStream();
26             InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
27             BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
28 
29             String str;
30             if ((str = bufferedReader.readLine()) != null) {
31                 System.out.println("I am Server, now get message from Client: " + str);
32             }
33             socket.shutdownInput();
34 
35             // 3.server发送消息
36             OutputStream outputStream = socket.getOutputStream();
37             PrintWriter printWriter = new PrintWriter(outputStream);
38             printWriter.write("[welcome to you!]");
39             printWriter.flush();
40 
41             // 4.关闭资源
42             printWriter.close();
43             outputStream.close();
44 
45             bufferedReader.close();
46             inputStreamReader.close();
47             inputStream.close();
48             socket.close();
49             serverSocket.close();
50 
51         } catch (IOException e) {
52             e.printStackTrace();
53         }
54     }
55 
56 }

1  package com;
 2  
3  import java.io.* ;
 4  import java.net.Socket;
 5  
6  /** 
7  * Socket Client
 8  * <p>
 9  * Created by Administrator on 2018/5/2.
 10   */ 
11  public  class Client {
 12  
13      public  static  void main(String[] args) {
 14  
15          try {
 16  
17              // 1. Initialize client socket connection 
18              Socket socket = new Socket("localhost", 8888);
19 
20             // 2.client发送消息
21             OutputStream outputStream = socket.getOutputStream();
22             PrintWriter printWriter = new PrintWriter(outputStream);
23             printWriter.write("[name:tom, pwd:123]");
24             printWriter.flush();
25             socket.shutdownOutput();
26 
27             // 3.client接收消息
28             InputStream inputStream = socket.getInputStream();
29             InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
30             BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
31             String str;
32             while ((str = bufferedReader.readLine()) != null) {
33                 System.out.println("I am Client, now get message from Server:" + str);
34             }
35 
36             // 4.关闭资源
37             bufferedReader.close();
38             inputStreamReader.close();
39             inputStream.close();
40 
41             printWriter.close();
42             outputStream.close();
43             socket.close();
44 
45         } catch (IOException e) {
46             e.printStackTrace();
47         }
48     }
49 }