Java多线程Socket操作猜数游戏样例

 ServerApp.java
    package test;
    import java.io.*;
    import java.net.*;
    /** *//**
     * 端程序
     *
     * @author luxuan310，修正赵学庆。
     *
     */
    public class ServerApp ...{
      static final int PORT = 9000;
      private ServerSocket serverSocket;
      private Socket socket;
      private BufferedReader netIn;
      private PrintWriter netOut;
      public ServerApp() throws IOException ...{
        serverSocket = new ServerSocket(PORT);
        System.out.println("server start");
        while (true) ...{
          // 等待连接
          socket = serverSocket.accept();
          ServerThread st = new ServerThread(socket);
          new Thread(st).start();
        }
      }
      class ServerThread implements Runnable ...{
        private Socket socket;
        private int randomNumber;
        private int clientGuessNumber;
        public ServerThread(Socket s) throws IOException ...{
          socket = s;
          netIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
          netOut = new PrintWriter(socket.getOutputStream());
        }
        public void run() ...{
          System.out.println("client" + socket.getInetAddress() + " is connect");
          randomNumber = (int) (Math.random() * 100);
          System.out.println("random number is:" + randomNumber);
          try ...{
            clientGuessNumber = Integer.parseInt(netIn.readLine());
            System.out.println("client guess number is:" + clientGuessNumber);
            for (int i = 3; i > 0; i--) ...{
              if (clientGuessNumber == randomNumber) ...{
                netOut.println("OK,恭喜，猜对了");
                ClientApp.finished = true;
              } else if (clientGuessNumber < randomNumber) ...{
                netOut.println("您猜的数小了，您还有" + (i - 1) + "次机会");
                ClientApp.finished = false;
              } else if (clientGuessNumber > randomNumber) ...{
                netOut.println("您猜的数大了，您还有" + (i - 1) + "次机会");
                ClientApp.finished = false;
              }
              netOut.flush();
              if (!ClientApp.finished) ...{
                clientGuessNumber = Integer.parseInt(netIn.readLine());
              } else ...{
                break;
              }
            }
            if (!ClientApp.finished) ...{
              netOut.println("OK,您没有机会了，游戏结束");
            }
            ClientApp.finished = true;
          } catch (IOException e) ...{
          } finally ...{
            try ...{
              netOut.close();
              netIn.close();
              socket.close();
            } catch (IOException ee) ...{
            }
          }
        }
      }
      public static void main(String[] args) throws IOException ...{
        new ServerApp();
      }
    }
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   package test;
    import java.io.*;
    import java.net.*;
    public class ClientApp ...{
      private Socket socket;
      private BufferedReader netIn;
      private PrintWriter netOut;
      private BufferedReader keyboardIn;
      static Boolean finished = false;
      public ClientApp() throws IOException ...{
        System.out.println("请输入服务器地址，连接本地服务器请输入localhost");
        keyboardIn = new BufferedReader(new InputStreamReader(System.in));
        try ...{
          if (keyboardIn.readLine().equalsIgnoreCase("localhost")) ...{
            socket = new Socket(InetAddress.getLocalHost(), ServerApp.PORT);
          } else ...{
            socket = new Socket(InetAddress.getByName(keyboardIn.readLine()), ServerApp.PORT);
          }
          netIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
          netOut = new PrintWriter(socket.getOutputStream());
        } catch (UnknownHostException e) ...{
          System.err.println("连接不到服务器");
          System.exit(-1);
        }
        System.out.println("连接成功");
        while (!finished) ...{
          System.out.println("请输入0－100之间的数字");
          netOut.println(keyboardIn.readLine());
          netOut.flush();
          String str = netIn.readLine();
          if (str == null) ...{
            finished = true;
            break;
          }
          System.out.println(str);
          if (str.startsWith("OK")) ...{
            finished = true;
            break;
          }
        }
        netIn.close();
        netOut.close();
        keyboardIn.close();
        socket.close();
      }
      public static void main(String[] args) throws IOException ...{
        new ClientApp();
      }
    }
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