File: BareBonesBrowserLaunch.java

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package com.centerkey.utils;

import java.lang.reflect.Method;
import javax.swing.JOptionPane;

/**
 * Bare Bones Browser Launch for Java<br>
 * Utility class to open a web page from a Swing application
 * in the user's default browser.<br>
 * Supports: Mac OS X, GNU/Linux, Unix, Windows XP<br>
 * Example Usage:<code><br> &nbsp; &nbsp;
 *    String url = "http://www.google.com/";<br> &nbsp; &nbsp;
 *    BareBonesBrowserLaunch.openURL(url);<br></code>
 * Latest Version: <a href="http://www.centerkey.com/java/browser/">http://www.centerkey.com/java/browser</a><br>
 * Author: Dem Pilafian<br>
 * Public Domain Software -- Free to Use as You Like
 * @version 1.5, December 10, 2005
 */
public class BareBonesBrowserLaunch {

   private static final String errMsg = "Error attempting to launch web browser";

   /**
    * Opens the specified web page in a web browser
    * @param url  An absolute URL of a web page (ex: "http://www.google.com/")
    */
   public static void openURL(String url) {
      String osName = System.getProperty("os.name");
      try {
         if (osName.startsWith("Mac OS")) {
            Class fileMgr = Class.forName("com.apple.eio.FileManager");
            Method openURL = fileMgr.getDeclaredMethod("openURL",
               new Class[] {String.class});
            openURL.invoke(null, new Object[] {url});
            }
         else if (osName.startsWith("Windows"))
            Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);
         else { //assume Unix or Linux
            String[] browsers = {
               "firefox", "opera", "konqueror", "epiphany", "mozilla", "netscape" };
            String browser = null;
            for (int count = 0; count < browsers.length && browser == null; count++)
               if (Runtime.getRuntime().exec(
                     new String[] {"which", browsers[count]}).waitFor() == 0)
                  browser = browsers[count];
            if (browser == null)
               throw new Exception("Could not find web browser");
            else
               Runtime.getRuntime().exec(new String[] {browser, url});
            }
         }
      catch (Exception e) {
         JOptionPane.showMessageDialog(null, errMsg + ":\n" + e.getLocalizedMessage());
         }
      }

   }