A simple class to load an URL in a browser

      
/* This code is part of Freenet. It is distributed under the GNU General
 * Public License, version 2 (or at your option any later version). See
 * http://www.gnu.org/ for further details of the GPL. */

//package freenet.utils;

import java.lang.reflect.Method;
import java.net.URL;

/**
 * A simple class to load an URL in a browser
 * 
 * @author Florent Daigni&egrave;re &lt;nextgens@freenetproject.org&gt;
 */
public class BrowserLaunch {
  private final static boolean isMacos;
  private final static boolean isWindows;
  private static String BROWSER = null;
  
  static {
    String osName = System.getProperty("os.name");
    isMacos = osName.startsWith("Mac OS");
    isWindows = osName.startsWith("Windows");
    if(!isMacos && !isWindows) {
      //assume Unix or Linux
      String[] browsers = {"firefox", "opera", "konqueror", "epiphany", "mozilla", "netscape", "seamonkey"};

      try {
        for(int count = 0; count < browsers.length && BROWSER == null; count++)
          if(Runtime.getRuntime().exec(new String[]{"which", browsers[count]}).waitFor() == 0)
            BROWSER = browsers[count];
      } catch (Exception e) {}
    }
  }
  
        public static void main(String arg[]) {
    launch(arg[0]);
  }
  
  public static void launch(URL url) {
    launch(url.toString());
  }
  
  public static void launch(String url) {
                try {
                        if (isMacos) {
                                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 (isWindows)
        Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);
                        else {
                                if (BROWSER == null)
                                        throw new Exception("Could not find web browser");
                                else 
                                        Runtime.getRuntime().exec(new String[] { BROWSER, url });
                        }
                }
                catch (Exception e) {
                        System.out.println("Unable to detect/startup your browser... please go to " + url + " for futher instructions");
                }
        }
}

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A simple class to load an URL in a browser : Utilities « Network Protocol « Java

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