Need help with input, parsing, and loop in one program

Question

I am doing an assignment that is supposed to:
# ask the user for a URL
# For the entered URL, read all the HTML text from the page and extract all links (other URLs) and image names. These should be printed to the console window.
# Reprompt for a URL until the user presses the cancel button.
# Define at least one helper method that serves a practical purpose that your main method will use. Note that your method(s) should serve a useful purpose, and it should make sense that they are separated out from the main method.
So far, I figured out how to ask if the user would like to play again, though I can't make it loop to play again. The "NO_OPTION" works fine and exits out.
I cannot figure out at all how to ask for the URL and then use that URL to try to parse the HTML to find the links and pictures.
for the loop, is it:
do{
...//all the stuff//
}while (option == JOptionPane.YES_OPTION) ?(I think I have to parse, looking for "img src" and "a href", anyway)
The biggest thing I'm getting hung up about is where to start. All it'll do is ask for the URL, say there is an error, and ask if I want to do it again. Don't know how to make it loop again. Like I said, I think it's a do while loop but am not completely sure where it goes and how to have it work on the entire thing with message dialoge boxes
To ask for the input, I was trying to make the dialoge box a string so the string would be displayed and have the links extracted
String linkString=   
          JOptionPane.showInputDialog("Please enter a URL:");...but it obviously doesn't work like that...
Here is the whole mess so far...I don't know what my question is because I know what I want, just not the terms to ask. help?
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.JOptionPane;
public class WebPageExaminer
     public static void main(String[] args)
          String linkString=   
          JOptionPane.showInputDialog("Please enter a URL:");
    String link = null;
    URL url;
    URLConnection urlC;
    InputStream inStream;
    InputStreamReader inStreamReader;
    BufferedReader reader;
    try
    url = new URL(link);
    urlC = url.openConnection();
    inStream = urlC.getInputStream();
    inStreamReader = new InputStreamReader(inStream);
    reader = new BufferedReader(inStreamReader);
    String inputLine = reader.readLine();
    while (inputLine != null)
      System.out.println(inputLine);
      inputLine = reader.readLine();
    catch(Exception e)
      JOptionPane.showMessageDialog(null, "Error reading from file");
    } int answer = JOptionPane.showConfirmDialog(null, "Examine Another URL?", "Click Yes or NO:", JOptionPane.YES_NO_OPTION);
    if (answer == JOptionPane.NO_OPTION)
         System.out.println("Goodbye");
         System.exit(0);
          if (answer == JOptionPane.YES_OPTION)
              System.out.println("OK!");
}Edited by: digital.tradecraft on Mar 14, 2009 1:27 PM

Answer 1

You posted the questions 20 minutes ago? Why are you bumping it. People answer questions when they know the answer.
I tend to ignore people who expect an immediate answer.