Launching another java application fails from java web start

Question

As, it is easy to download jars and other artifacts using http://code.google.com/p/jnlpdownloader/

So, I am trying to execute my business application from a small launcher application(this launcher application is running as Java web start application).

This launcher application,

first download executable business application jar from URL(available at runtime only)
And then execute the executable business jar.

But, the following code doesn't seems to work, nor, it is throwing any exceptions

String[] command = {"java -jar", "JarFromURL.jar"};
        Runtime r = Runtime.getRuntime();
        try {
            r.exec(command);
        } catch (IOException e1) {

            JOptionPane.showMessageDialog(null, "Voilla...") ;
        }

1) exec throws 3 other exceptions besides IOException, what are you doing with those? 2) Be sure to read & implement all the recommendation of When Runtime.exec() won't. By the looks of it, you copied that code from the back of a box of coco-pops. 3) Use ProcessBuilder in this millennium. — Andrew Thompson
– Andrew Thompson, Commented Jan 22, 2012 at 0:50

h3xStream · Accepted Answer · 2012-01-22 04:18:38Z

1

The array of parameters passed to exec() should be split this way.

String[] command = {"java", "-jar", "JarFromURL.jar"};

answered Jan 22, 2012 at 4:18

h3xStream

6,7092 gold badges51 silver badges60 bronze badges

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

1 Comment

trashgod Over a year ago

Also consider ProcessBuilder.

Collectives™ on Stack Overflow

Launching another java application fails from java web start

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related