java的socket编程的代码

你可以参考以下Java Socket编程的基本代码框架：

客户端代码：

import java.io.*;
import java.net.*;

public class Client {
    public static void main(String[] args) throws IOException {

        // 与服务器建立连接
        Socket socket = new Socket("localhost", 8888);

        // 发送信息
        OutputStream outputStream = socket.getOutputStream();
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream));
        bufferedWriter.write("客户端发送消息");
        bufferedWriter.flush();

        // 接收信息
        InputStream inputStream = socket.getInputStream();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        String response = bufferedReader.readLine();
        System.out.println("接收消息：" + response);

        // 关闭流和socket
        bufferedReader.close();
        bufferedWriter.close();
        socket.close();
    }
}

服务器端代码：

import java.io.*;
import java.net.*;

public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = new ServerSocket(8888);
        System.out.println("服务器启动，等待客户端连接...");

        Socket socket = serverSocket.accept();
        System.out.println("客户端连接成功！");

        // 接收信息
        InputStream inputStream = socket.getInputStream();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        String message = bufferedReader.readLine();
        System.out.println("接收到客户端的消息：" + message);

        // 发送信息
        OutputStream outputStream = socket.getOutputStream();
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream));
        bufferedWriter.write("服务器返回消息");
        bufferedWriter.flush();

        // 关闭流和socket
        bufferedReader.close();
        bufferedWriter.close();
        socket.close();
    }
}

以上是Java Socket基本编程框架，可以根据自己的需求进行修改和优化。