1. My aim is to run the Java version of the SAP GUI (front end to SAP) on Linux machine
2. I have earlier done this in a Fedora based Linux distribution using BLACKDOWN java version 1.4.1. There was no problem and the installation was smooth.
3. Now I have installed Knoppix 3.7 in my Hard Disk and it has HOTSPOT java 1.4.2
4. When I use the command
java -jar gul620.jar (where gul620.jar is the jar file supplied by SAP)
I am getting the following error:
Xlib : connection to ":0.0" refused by server
Xlib : No protocol specified
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window
server using ':0.0' as the value of the DISPLAY variable.

How do I overcome this error? Where and how I should change the value of DISPLAY?

More info: HOTSPOT Java : J2RE Standard edition 1.4.2_06-b03
Client 1.4.2_06-b03, mixed mode.


Thanking you in advance