Re: string to URL and URL to string

Roedy Green <>
Mon, 01 Sep 2008 03:32:40 GMT
On Sun, 31 Aug 2008 19:33:30 -0700 (PDT), bH <>
wrote, quoted or indirectly quoted someone who said :

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class BookmarksC extends JFrame implements ActionListener{

 private JButton b1 = new JButton(" Hotmail ");
 private String bmklistURL[] = new String[1];

 public BookmarksC() {
   super("URL Button");
   bmklistURL[0]= "";
   JPanel btnPanel = new JPanel();
   Container contentPane= getContentPane();
 public void actionPerformed(ActionEvent evt) {
   Object source = evt.getSource();
   String theURLX = new String();
   URL theURL = null;
     if (evt.getSource() == b1) {
       theURL = new URL(bmklistURL[0]);
   catch ( MalformedURLException e) {
     System.out.println("Bad URL: " + theURL);
   System.out.println(" The URL is "+ theURL);
   // theURLX below comes up empty.
   System.out.println(" The string is "+ theURLX);

 public static void main(String[] args)
   BookmarksC app = new BookmarksC ();

You have to compare two URLs or two Strings. Otherwise they will
always compare not equal. Java will not automatically convert both to
URL or both to String to compare them.

Instead of:

  String theURLX = new String();

you should say more simply:

  String theURLX = "";

You don't really need a an extra copy of the empty string object
littering your heap.

Roedy Green Canadian Mind Products
The Java Glossary

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