Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm given the following instructions:

You must set the sun.lang.ClassLoader.allowArraySyntax system property to true by adding the following to the JVM arguments:


How do I do that? I go here:

enter image description here

But I cannot edit the Runtime Parameters in the System tab. And even on the Users tab, it will not save my changes. I need this to be a system-wide change.

I ran the Java Control Panel by Right-clicking it and choosing Run as Administrator. I'm full admin on this machine.

share|improve this question
up vote 2 down vote accepted

Double-click the 'Runtime Parameters' box in the USER side and edit it there.

These changes will get propagated to the SYSTEM side.

Please don't ask me why, I don't want to consider the ramifications.

share|improve this answer
Sure enough... I see the same behavior. I'm not sure Oracle really gets the distinction between user and system... – Ryan Ries May 6 '13 at 19:34

edit "%APPDATA%\Sun\Java\Deployment\"

records ... .args=

notepad "%APPDATA%\Sun\Java\Deployment\"
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.