Java中的TCP套接字编程简介？

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

public class TCPClient {
    public static void main(String[] args) {
        try {
            // 创建套接字
            Socket socket = new Socket("localhost", 8080);

            // 获取输入输出流
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

            // 发送数据
            out.println("Hello, server!");

            // 接收数据
            String response = in.readLine();
            System.out.println("Server response: " + response);

            // 关闭套接字
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}