import java.io.IOException;import java.io.InputStream;import java.net.Socket;import java.util.Scanner;public class SocketTest {    public static void main(String[] args)     {        try         {             Socket s = new Socket("time-A.timefreq.bldrdoc.gov",13);            try             {                 InputStream inStream = s.getInputStream();                 @SuppressWarnings("resource")                 Scanner scanner = new Scanner(inStream);                                 while (scanner.hasNextLine())                 {                     String line = scanner.nextLine();                     System.out.println(line);                 }             }            finally             {                 s.close();             }         } catch (IOException e)         {             e.printStackTrace();         }     } }//源代码片段来自云代码http://yuncode.net