java 网络编程 多个客户端连接服务器

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;


public class ServerDemo implements Runnable
{
ServerSocket server = null;  //创建ServerSocket对象；
Socket socket = null;//创建Socket对象；
BufferedReader br = null;//创建BufferedReader对象；
String content;//存放客户端读取的内容；
public static void main(String[] args) 
{
ServerDemo serverDemo = new ServerDemo();
try 
{
serverDemo.server = new ServerSocket(10086);
} catch (IOException e) 
{
e.printStackTrace();
}
Thread t1 = new Thread(serverDemo);    //两个客户端，开启两个子线程；
Thread t2 = new Thread(serverDemo);
t1.start();
t2.start();
}
public void run() 
{
while(true)
{
try 
{
socket = server.accept();        //实例化socket对象，若连接，则创建一套数字；
br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
System.out.println("客户端连接成功");
socket.shutdownOutput();
while((content = br.readLine()) != null)
{
System.out.println(content);
}
socket.shutdownInput();
} catch (IOException e) 
{
e.printStackTrace();
}finally
{
try 
{
br.close();
server.close();
} catch (IOException e) 
{
e.printStackTrace();
}

}
}
}

}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;


public class ClientDemo1 
{
public static void main(String[] args) 
{
startClient();
}
private static void startClient()
{
BufferedReader br = null;
BufferedWriter bw = null;
try 
{
Socket socket = new Socket("localhost", 10086);
br = new BufferedReader(new InputStreamReader(System.in));
bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
System.out.println("client1连接服务器连接成功");
String content;
while(!(content = br.readLine()).equals("886"))
{
bw.write(content + "\n");
bw.flush();
}
} catch (UnknownHostException e) 
{
e.printStackTrace();
} catch (IOException e) 
{
e.printStackTrace();
}
try {
br.close();
bw.close();
} catch (IOException e)  
{
e.printStackTrace();
}
}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientDemo2 
{
public static void main(String[] args) 
{
startClient();
}
private static void startClient()
{
BufferedReader br = null;
BufferedWriter bw = null;
try 
{
Socket socket = new Socket("localhost", 10086);
br = new BufferedReader(new InputStreamReader(System.in));
bw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
System.out.println("client1连接服务器连接成功");
String content;
while(!(content = br.readLine()).equals("886"))
{
bw.write(content + "\n");
bw.flush();
}
} catch (UnknownHostException e) 
{
e.printStackTrace();
} catch (IOException e) 
{
e.printStackTrace();
}
try {
br.close();
bw.close();
} catch (IOException e)  
{
e.printStackTrace();
}
}
}