补全以下代码：package step1; import java.net.ServerSocket; import java.net.Socket; public class Server { public ServerSocket serverSocket; public Socket socket; public void start() { try { Client client = new Client(); /********** Begin *********/ client.start(); //启动客户端 /********** End *********/ client.stop(); //关闭客户端 } catch(Exception e) { e.printStackTrace(); } } }

package step1;

import java.net.ServerSocket;
import java.net.Socket;

public class Server {
public ServerSocket serverSocket;
public Socket socket;

public void start() {
try {
Client client = new Client();
/********** Begin *********/
client.start(); //启动客户端
client.join(); //等待客户端线程结束
/********** End *********/
client.stop(); //关闭客户端
} catch (Exception e) {
e.printStackTrace();
}
}
}

相关问题

import java.net.ServerSocket; import java.net.Socket; import java.net.UnknownHostException;

这是Java中用于实现网络编程的三个类库：ServerSocket、Socket和UnknownHostException。

ServerSocket类用于实现服务器端程序，它绑定一个端口并等待客户端的连接请求。

Socket类用于实现客户端程序，它连接到服务器端的端口并发送请求。

UnknownHostException类是一个异常类，用于处理未知的主机异常。当使用主机名创建Socket对象时，如果主机名无效，则会抛出UnknownHostException异常。

下面的程序为利用Socket实现客户端和服务端通信，请填空把程序补充完整。 //服务器端（ServerTest.java文件清单：） import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.ServerSocket; import java.net.Socket; class Server

Test{
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(8888);
System.out.println("服务器已启动，等待客户端连接...");
Socket socket = serverSocket.accept();
System.out.println("客户端已连接，客户端信息如下：" + socket);
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter writer = new PrintWriter(socket.getOutputStream(), true);
while (true) {
String message = reader.readLine();
if (message == null) {
break;
}
System.out.println("客户端发送的消息是：" + message);
writer.println("已收到消息：" + message);
}
reader.close();
writer.close();
socket.close();
serverSocket.close();
}
}

// 客户端（ClientTest.java文件清单：）
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

class ClientTest {
public static void main(String[] args) throws UnknownHostException, IOException {
Socket socket = new Socket("localhost", 8888);
System.out.println("已连接服务器，服务器信息如下：" + socket);
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter writer = new PrintWriter(socket.getOutputStream(), true);
BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
while (true) {
String message = console.readLine();
writer.println(message);
String response = reader.readLine();
System.out.println("收到服务器的回复：" + response);
}
}
}