running a java program from javascript

bazcaz

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

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

look into creating an applet or Java web start

Valehru

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

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

bazcaz

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

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

bazcaz

ya i got it sorted thanks

toString

bazcaz wrote:

ya i got it sorted thanks

how, with MozillaZine?

Hobbes

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

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.