urldissector.java

来自「Java 程序设计教程（第五版）EXAMPLESchap05源码」· Java 代码 · 共 40 行

//********************************************************************
//  URLDissector.java       Author: Lewis/Loftus
//
//  Demonstrates the use of Scanner to read file input and parse it
//  using alternative delimiters.
//********************************************************************

import java.util.Scanner;
import java.io.*;

public class URLDissector
{
   //-----------------------------------------------------------------
   //  Reads urls from a file and prints their path components.
   //-----------------------------------------------------------------
   public static void main (String[] args) throws IOException
   {
      String url;
      Scanner fileScan, urlScan;

      fileScan = new Scanner (new File("urls.inp"));

      // Read and process each line of the file
      while (fileScan.hasNext())
      {
         url = fileScan.nextLine();
         System.out.println ("URL: " + url);

         urlScan = new Scanner (url);
         urlScan.useDelimiter("/");

         //  Print each part of the url
         while (urlScan.hasNext())
            System.out.println ("   " + urlScan.next());

         System.out.println();
      }
   }
}