编辑代码

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

public class Client {
    public static void main(String[] args) throws IOException {
        String serverAddress = localhost;  服务器地址
        int port = 8888;  服务器端口号
        Socket socket = new Socket(serverAddress, port);  创建客户端套接字
        System.out.println(已连接到服务器： + serverAddress);

         发送消息给服务器
        PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
        out.println(Hello, Server!);

         接收服务器响应
        BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String response = in.readLine();
        System.out.println(收到服务器响应： + response);

        socket.close();  关闭客户端套接字
    }
}