Hello,

I have a java programm which shall open a Browser with a certain URL
AND!!!!! if this browser window is closed from a use after a while, the
java programm should be informed about this.

The following code is what I did. I am able to open a browser OS
independently.
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package com.indatex.browsercommunication;
import java.io.*;
/* Note - you must include the url type -- either "http://" or
* "file://".
*/
public class BrowserControlOSIndependent
{
    // Used to identify the windows platform.
   private   String WIN_ID = "Windows";
   // The default system browser under windows.
   private  String WIN_PATH = "rundll32";
   // The flag to display a url.
   private  String WIN_FLAG = "url.dll,FileProtocolHandler";
   // The default browser under unix.
   private  String UNIX_PATH = "netscape";
   // The flag to display a url.
   private  String UNIX_FLAG = "-remote openURL";
   private Process p = null;

   public boolean hasBrowserFinished()throws Exception{
       if(p.exitValue()>0){
           return true;
       }
       p.destroy();
       return false;
   }

   public void displayURL(String url)
   {
       boolean windows = isWindowsPlatform();
       String cmd = null;
       try
       {
           if (windows)
           {
               // cmd = 'rundll32 url.dll,FileProtocolHandler
http://...'
               cmd = WIN_PATH + " " + WIN_FLAG + " " + url;
               p = Runtime.getRuntime().exec(cmd);
               try {
                    p.waitFor();
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
           }
           else
           {
               // Under Unix, Netscape has to be running for the
"-remote"
               // command to work.  So, we try sending the command and
               // check for an exit value.  If the exit command is 0,
               // it worked, otherwise we need to start the browser.
               // cmd = 'netscape -remote
openURL(http://www.javaworld.com)'
               cmd = UNIX_PATH + " " + UNIX_FLAG + "(" + url + ")";
               Process p = Runtime.getRuntime().exec(cmd);
               try
               {
                   // wait for exit code -- if it's 0, command worked,
                   // otherwise we need to start the browser up.
                   int exitCode = p.waitFor();
                   if (exitCode != 0)
                   {
                       // Command failed, start up the browser
                       // cmd = 'netscape http://www.javaworld.com'
                       cmd = UNIX_PATH + " "  + url;
                       p = Runtime.getRuntime().exec(cmd);
                   }
               }
               catch(InterruptedException x)
               {
                   System.err.println("Error bringing up browser,
cmd='" +
                                      cmd + "'");
                   System.err.println("Caught: " + x);
               }
           }
       }
       catch(IOException x)
       {
           // couldn't exec browser
           System.err.println("Could not invoke browser, command=" +
cmd);
           System.err.println("Caught: " + x);
       }
   }
   /**
    * Try to determine whether this application is running under
Windows
    * or some other platform by examing the "os.name" property.
    *
    * @return true if this application is running under a Windows OS
    */
   public  boolean isWindowsPlatform()
   {
       String os = System.getProperty("os.name");
       if ( os != null && os.startsWith(WIN_ID))
           return true;
       else
           return false;

   }

}

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Thats everything fine. BUT!! if I close the Browser Window the java
programm shall be notified.
How does this work???

I thougt the easiest way is to examine the exitValue() of the process
in a lets say endles loop.
That doesnt work with process.exitValue() I always get 0, if the
browser is closed or not.

Could you help me?

Thank,
Peter