Socket编程 -- 全双工通信

//这是客户端
package com.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {

    public Client() {
        
        try {
            Socket s = new Socket("127.0.0.1",9999);
            PrintWriter pw = new PrintWriter(s.getOutputStream(),true);
            
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            InputStreamReader isr2 = new InputStreamReader(s.getInputStream());
            BufferedReader br2 = new BufferedReader(isr2);
                
             while (true) {
                System.out.println("请输入你对服务器的话");
                String info = br.readLine();
                pw.println(info);
                String res = br2.readLine();
                System.out.println("服务器说"+ res);
            } 
        } catch (Exception e) {
            e.printStackTrace();
        } 
    }

    
    public static void main(String[] args) {
        Client client = new Client();
    }

}

//这是服务器
package com.test;

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

public class Server {
    public static void main(String[] args) {
        Server server =new Server();
    }
    public Server(){
        
        try {
            System.out.println("服务器在9999监听");
            ServerSocket ss    = new ServerSocket(9999);
            Socket s = ss.accept();
            
            InputStreamReader isr = new InputStreamReader(s.getInputStream());
            BufferedReader br = new BufferedReader(isr);
            
            PrintWriter pw = new PrintWriter(s.getOutputStream(),true);
              
            InputStreamReader isr2 = new InputStreamReader(System.in);
            BufferedReader br2 = new BufferedReader(isr2);     
            
             
            while (true) {
                String infoFromClient = br.readLine();
                System.out.println("客户端发来"+infoFromClient);
                System.out.println("请输入你想对客户端说的话");
                String     response = br2.readLine();
                    
                pw.println(response);
            }
            
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}