running a java program from javascript

bazcaz · 28-02-2006 05:28PM #1

The title explains the problem anyone have any ideas on how I might be able to execute a command like "java -classpath . hello" from inside a javascript file or so that I could start up a java program which interacts with the javascript automatically when the javascript is executed.

Alternatively maybe i could execute a bat file with the command in it to execute the java program.

I realise there are some problem in javascript with regard to starting external programs anyone know a way around this.

Cheers

Valehru · 28-02-2006 08:55PM

Not possible! If this feature was even remotely possible you could crush, rape, maim and pillage a users computer!

Just FYI....aim for a different approach!

toString · 28-02-2006 09:23PM

look into creating an applet or Java web start

Valehru · 28-02-2006 09:26PM

Running an applet is a good idea but it is often bulkey and pointless to do so. The company I work for despises applets with a passion.

What exactly are you using the javascript for - Conditional Logic? Could you not do the same in a JSP page? would make things much easier I suppose.

You really must give us details about what you are trying to achieve should you wish us to give you some advice.

bpmurray · 28-02-2006 09:32PM

Well, it's sorta possible using JSObject. Search Sun's site for how to do it.

bazcaz · 28-02-2006 09:44PM

Its a thunderbird email client extension implemented mainly in javascript which talks to a piece of java by http.

I want to be able to start up the java from the thunderbird interface rather than having to start up the java independently each time I want to use the extension

I know there is a way of doing it ,its definitely not impossible

Hobbes · 28-02-2006 10:51PM

Try MozillaZine, afaik it is doable within the extension framework. Just can't recall how offhand.

bazcaz · 01-03-2006 12:31AM

ya i got it sorted thanks

toString · 01-03-2006 01:29AM

bazcaz wrote:

ya i got it sorted thanks

how, with MozillaZine?

Hobbes · 01-03-2006 06:53AM

bazcaz wrote:

ya i got it sorted thanks

Yea please post solution here so that another who has the same issue can find it here.

bazcaz · 01-03-2006 05:22PM

var file = Components.classes["@mozilla.org/file/local;1"]
         .createInstance(Components.interfaces.nsILocalFile);
   file.initWithPath(PathToBatchFile);
   process = Components.classes["@mozilla.org/process/util;1"]
                        .createInstance(Components.interfaces.nsIProcess);
   process.init(file);
   var blocking=false;
   var argv=[];
   process.run(blocking,argv,argv.length);

The batch file holds the java command to run the program I want.

running a java program from javascript

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