So, I'm trying to install Wyvern (a java based MUD, made by a company called cabochon) and when I do I get an error saying that the program expected there to be a X11 Display property set, but that it wasn't. What gives?
I ran xorgconfig, but to no avail. Granted, I did bluff my way through quite a bit of it, but nothing was ever said about an X11 display property.

Also, the installation notes say that I need to create a launcher. I'm running Blackbox as the GUI currently, and can't find out how to do this from there- I assume that this is only doable in the GUI, as most references to creating a launcher talk about how to do it in Gnome or some other environment.

So, what ought I do?

Ok, first thing's first. Exactly what display propery needs to be set???Details make the difference between a qustion that can be answered and a question that is ignored.

Correction: the words used were X11 Dispaly variable. Here is what happened, pretty much verbatim:
jonnybot@darkstar~$: java -jar /directory/pure_install.jar
Exception in main class "JavaExpressLoader"
java.awt.Headlessexception
NO X11 display variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnviornment.checkHeadless(Unknown Source)
at java.awt.Window.<init>(Unknown Source)

and so on, listing places where the dispaly variable was required.

If it's pertinent, the version of java that I'm running is 1.5.0_04. This is several versions higher than the one required to run the installer, and I've been able to install and run the program on Windows machines with higher versions of java in the past.

put those lines in your /home/username/.bash_profile

There's no such file. My username has a folder in /home, but the only file inside it that resembles .bash_profile is .bash_history

---
Ammendment: Thanks to Unduhtakuh's tip list, I was able to create a .bash_profile and insert that option. Though there's a new difficulty with the java installer (I need Swing 1.1 or 1.2 in my classpath for it to work), the problem in question has been fixed. Many thanks.

@jonnybot

run the following command to locate .bash_profile
u can also add those lines in .bashrc file similarly

What exactly does this do? What does 0.0 mean?

More information on the bash start up scripts is here:

http://humanreadable.nfshost.com/sdeg/bash_startup.htm

Slackware doesn't come with them installed, you'll have to make your own. :-D

Regards,

-Drew