[FIXED] Java "Application Error"

Newbie & Debugging Questions
#1

So I’ve been having this problem for a while, and the problem is that when I run any .jar file by double-clicking it, I get an error saying “Unable to launch the application.”, and this didn’t happen before. I tried to delete and re-install both the JRE and JDK, but that didn’t help either. I also tried resetting the Path variable, but that didn’t work as well.

There’s a “Details” button on the error window, and when I click it the exception is as follows:
[spoiler]

MissingFieldException[ The following required field is missing from the launch file: <jnlp>]
	at com.sun.javaws.jnl.XMLFormat.parse(Unknown Source)
	at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
	at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
	at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[/spoiler]

I’m also using JRE version 1.7.0_04-b20. Any ideas what the problem might be? :-\

#2

Looks like your file association got screwed up and and associated all jars with javaws instead of javaw. If you’re on windows, there’s a clicky way to fix this: http://www.softpedia.com/progDownload/Jarfix-Download-79716.html

#3

Thanks a lot, it worked! :smiley: