How to populate customized message from JNLP?

I have java applications running with different JREs. Is there a way to populate message to remote users from the JNLP when a required JRE is not found on desktop. I'm having trouble finding all the JREs installed on the client desktop, specifically JRE 131 and below.Thanks in
[300 byte] By [Baskia] at [2007-11-26 15:37:49]
# 1
That isn't possible to my knowledge. The moment javaws is invoked it will check if the jre you have is sufficient for the program and that isn't a process which cannot be customized afaik.
Lion-Oa at 2007-7-8 21:55:47 > top of Java-index,Desktop,Deploying...