服务器端： import java.io.PrintWriter; import java.net.ServerSocket; import java.net.Socket;

public class SocketServerTest { String[] dateString = { "d", "c", "3", "4", "=" };

public static void main(String[] args) {	SocketServerTest socketClient = new SocketServerTest();	socketClient.startTest();}public void startTest() {	try {		ServerSocket serverSocket = new ServerSocket(3989);// get port		while (true) {// server will start all the time			Socket socket = serverSocket.accept();// create socket			PrintWriter printWriter = new PrintWriter(					socket.getOutputStream());// create												// printwriter			printWriter.print(getData());// out print data			printWriter.close();			printWriter.print(getData());// out print data		}	} catch (Exception e) {		e.printStackTrace();	}}public String getData() {	int radom = (int) (Math.random() * dateString.length);	return dateString[radom];}

}

客户端代码： import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.Socket;

public class SocketClientTest { public static void main(String[] args) { SocketClientTest socketClientTest = new SocketClientTest(); for (int i = 0; i <= 10; i++) { socketClientTest.start(); }

}public void start() {	try {		Socket socket = new Socket("127.0.0.1", 3789);// get port		InputStreamReader inputStreamReader = new InputStreamReader(				socket.getInputStream());// get inputstream		BufferedReader reader = new BufferedReader(inputStreamReader);// bufferedReader		String dataString = reader.readLine();		System.out.println(dataString);		reader.close();	} catch (Exception e) {		e.printStackTrace();	}}

}