多线程分析

package com.batman.eureka;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.Socket;
import java.util.Scanner;

public class HClient {
    static int i = 0;
    public static void main(String[] args) {
        while (true) {
            try {
                Socket socket = new Socket("127.0.0.1", 1234);
               /* System.out.println("please input...");
                Scanner scanner = new Scanner(System.in);
                String p = scanner.nextLine();
                if (p.equals("bye")) {
                    socket.close();
                    break;
                }*/
                String p = "my client";
                i = i + 1;
                if(i == 51)
                    break;
                // 发送给服务器的数据
                DataOutputStream out = new DataOutputStream(socket.getOutputStream());
                out.writeUTF(p + "  " + i);
                // 接收服务器的返回数据
              /*  DataInputStream in = new DataInputStream(socket.getInputStream());
                System.out.println("hserver:" + in.readUTF());*/
                socket.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

package com.batman.eureka;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class HServerApp implements Runnable {
    public int port;
    
  //  ExecutorService executorService = Executors.newCachedThreadPool();
    ExecutorService executorService = Executors.newFixedThreadPool(5);  
    public HServerApp(int port) {
        this.port = port;
    }

    @Override
    public void run() {
        try {
            ServerSocket server = new ServerSocket(port);
            while (true) {
                //等待client的请求
               // System.out.println("waiting...");
                Socket socket = server.accept();
                // 接收客户端的数据
                DataInputStream in = new DataInputStream(socket.getInputStream());
                String str = in.readUTF();
                //socket.close();
               /* try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }*/
                System.out.println("client:" + str);
                executorService.execute(new TestRunnable()); 
                // 发送给客户端数据
               /* DataOutputStream out = new DataOutputStream(socket.getOutputStream());
                out.writeUTF("hi,i am hserver!i say:" + str);*/
                
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        HServerApp serverApp = new HServerApp(1234);
        serverApp.run();
    }
}

class TestRunnable implements Runnable{   
    public void run(){  
        System.out.println(Thread.currentThread().getName() + "线程被调用了。");   
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }   
}