import java.io.*;
import java.net.*;
public class SimpleServer {
  public static void main(String args[])throws Exception {
    ServerSocket serverSocket = new ServerSocket(8000,2);  //连接请求队列的长度为2
    Thread.sleep(360000);   //睡眠6分钟
  }
}

import java.io.*;
import java.net.*;
public class SimpleClient {
  public static void main(String args[])throws Exception {
    Socket s1 = new Socket("localhost",8000);
    System.out.println("第一次连接成功");
    Socket s2 = new Socket("localhost",8000);
    System.out.println("第二次连接成功");
    Socket s3 = new Socket("localhost",8000);
    System.out.println("第三次连接成功");
  }
}