Access Java int Array in JavaScript

Question

I have a Java applet that has an int array. I want to copy this array over to a JavaScript array. Simply calling a Java function from JavaScript that returns this array results in null exception and accessing the array element by element from JavaScript leads to browser crashes. What is the correct way to handle this? Perhaps JSObject?

Java runs on the server-side. JS runs on the client side. Are you sure you want to support a call from the client to the server ? — Nir Alfasi
– Nir Alfasi, Commented Jul 24, 2013 at 6:44
@alfasin Since Java 1.1 its possible to run Java-Code on Client via Applets. — Grim
– Grim, Commented Jul 24, 2013 at 8:56
@PeterRader My bad - I didn't notice this question has an applet tag — Nir Alfasi
– Nir Alfasi, Commented Jul 24, 2013 at 14:11

Grim · Accepted Answer · 2013-07-24 09:30:41Z

1

Try this:

<applet code="Applet.class" name="Applet" />
<script>var f = document.Applet.foobar();</script>

And

class Applet extends java.applet.Applet {
    public void init() {}
    public int[] foobar(){
        return new int[]{1,2,3};
    }
}

answered Jul 24, 2013 at 9:30

Grim

2,16312 gold badges63 silver badges139 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Aravind Over a year ago

Huh, I guess that it worked now. Didn't work when I tried the same thing earlier. Thanks!

Grim Over a year ago

Hm, it won't work if the Browser asks for Applet-Permission first. Usually programmers write a hello-callback-function.

Avinash K.P · Accepted Answer · 2013-07-24 07:08:37Z

1

You could use netscape JSObject to interact with JavaScript from Java Applet. Have a look at the below tutorial. It might be useful for you.

JSObject

answered Jul 24, 2013 at 7:08

Avinash K.P

1677 bronze badges

2 Comments

Aravind Over a year ago

Thanks, but simply calling a function that returns the int array turned out to be easier.

Avinash K.P Over a year ago

Yes. it's simpler indeed :)

Collectives™ on Stack Overflow

Access Java int Array in JavaScript

2 Answers 2

2 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related