A Web Crawler code...help

[sangeeta2009]

i have got a code for Web Crawler in java language.... Following is applet code...

import java.applet.Applet;
import java.text.*;
import java.awt.*;
import java.awt.List;
import java.awt.event.*;
import java.util.*;
import java.util.*;
import java.net.*;
import java.io.*;

/* <applet code=WebCrawler height=400 width=400>
</applet>
*/

public class WebCrawler extends Applet implements ActionListener, Runnable {
public static final String SEARCH = "Search";
public static final String STOP = "Stop";
public static final String DISALLOW = "Disallow:";
public static final int SEARCH_LIMIT = 50;

Panel   panelMain;
List    listMatches;
Label   labelStatus;

// URLs to be searched
Vector vectorToSearch;
// URLs already searched
Vector vectorSearched;
// URLs which match
Vector vectorMatches;

Thread searchThread;

TextField textURL;
Choice    choiceType;

public void init() {

// set up the main UI panel
panelMain = new Panel();
panelMain.setLayout(new BorderLayout(5, 5));

// text entry components
Panel panelEntry = new Panel();
panelEntry.setLayout(new BorderLayout(5, 5));

Panel panelURL = new Panel();
panelURL.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));
Label labelURL = new Label("Starting URL: ", Label.RIGHT);
panelURL.add(labelURL);
textURL = new TextField("", 40);
panelURL.add(textURL);
panelEntry.add("North", panelURL);

Panel panelType = new Panel();
panelType.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));
Label labelType = new Label("Content type: ", Label.RIGHT);
panelType.add(labelType);
choiceType = new Choice();
choiceType.addItem("text/html");
choiceType.addItem("audio/basic");
choiceType.addItem("audio/au");
choiceType.addItem("audio/aiff");
choiceType.addItem("audio/wav");
choiceType.addItem("video/mpeg");
choiceType.addItem("video/x-avi");
panelType.add(choiceType);
panelEntry.add("South", panelType);

panelMain.add("North", panelEntry);

// list of result URLs
Panel panelListButtons = new Panel();
panelListButtons.setLayout(new BorderLayout(5, 5));

Panel panelList = new Panel();
panelList.setLayout(new BorderLayout(5, 5));
Label labelResults = new Label("Search results");
panelList.add("North", labelResults);
Panel panelListCurrent = new Panel();
panelListCurrent.setLayout(new BorderLayout(5, 5));
listMatches = new List(10);
panelListCurrent.add("North", listMatches);
labelStatus

[Lost User]

This is far too much code for anyone to read through. Please identifiy the line of code where the error occurs and post only the small amount of code near that line. Have you looked at the documentation to see what an IllegalThreadStateException is, and what may be its causes?

[sangeeta2009]

public static void main (String argv[])
{
Frame f = new Frame("WebFrame");
WebCrawler applet = new WebCrawler();
f.add("Center", applet);

/* Behind a firewall set your proxy and port here!
*/
Properties props= new Properties(System.getProperties());
props.put("http.proxySet", "true");
props.put("http.proxyHost", "webcache-cup");
props.put("http.proxyPort", "8080");

            Properties newprops = new Properties(props);
            System.setProperties(newprops);

/**/

            applet.init();
            applet.start();
            f.pack();
            f.show();
    }

}

Ok ..just look at this MAIN is there something needed to be done at Properties prop=new Properties(System.getProperties()); Please compile it at your side ....and look at error.. there are some errors which i cannot explain... please just once run it at your side...and put the inputs and see what is that i am missing.... Please help me...

[Lost User]

sangeeta2009 wrote:

Please compile it at your side ....and look at error..

Well once I had commented out all the irrelevant code I could not see anything wrong; it compiles and runs. However, I don't see what this has to do with your original problem which as I recall, was some sort of ThreadException. My only suggestion is that you use whatever debug tools you have and try to step through your code. Assuming you wrote this code in the first place you should be able to extract small parts of it to test in isolation until you can at least narrow it down to a specific area of code.

[Nagy Vilmos]

Richard MacCutchan wrote:

Assuming you wrote this code in the first place [...]

#wistles#

---

Panic, Chaos, Destruction. My work here is done.

[Lost User]

Someone must have written it! :rolleyes:

[sangeeta2009]

Ok if Possible please help me out... I have run that code without any compilation error... But when i input the url int the first Text box.. say: http://java.sun.com in command prompt it give me errors..and doesn't display me any of the Url's related to that site.. Hope you get it...Please help and see if that works on your side... And please all other guys..stop commenting about the code....:mad::mad: I haven't written that code, i have taken it form Sun.com So if Somebody is interested in helping someone whose is in need...

[Lost User]

sangeeta2009 wrote:

I haven't written that code, i have taken it form Sun.com

Well I suggest you go back to Sun and ask them to fix it. I don't have the skills to work on a piece of code this complex, and as you haven't written it yourself I doubt that you have much understanding of it either.

[sangeeta2009]

Ohhh..!!! That means you cannot help ..except fake posting... If i will be knowing that...it will be better that i will not be here..asking for help!!! well thanks for time wasting... :( :( :mad::mad: :( :(

[Lost User]

sangeeta2009 wrote:

That means you cannot help ..except fake posting.

On the contrary, I have tried to help, but you seem incapable of doing anything for yourself, even answering a simple question.

sangeeta2009 wrote:

well thanks for time wasting

Yes, I am sorry that I have wasted my time trying to assist you. I thought you were a serious programmer who wanted to learn something. Obviously I was mistaken.