import java.net.*;
class UrlTest{
  public static void main(String args[]){
    try{
      URL url =new URL("http://www.tsinghua.edu.cn:80/chn/index.html");
      String urlPro=url.getProtocol();
      String urlHost=url.getHost();
      int urlPort=url.getPort();
      String fileName=url.getFile();
      String urlRef=url.getRef();
      System.out.println("URL協議："+urlPro);
      System.out.println("URL主機名："+urlHost);
      System.out.println("URL端口："+urlPort);
      System.out.println("URL文件名："+fileName);
      System.out.println("URL在文件中的相對位置："+urlRef);
    }
    catch(MalformedURLException e){
      e.printStackTrace();
    }
  }
}