Java Security question

Hello :
We have a need to change the default encryption strength.

So we need to apply this patch :
http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

Basically has to overwrite the existing  US_export_policy.jar &
local_policy.jar files in the jre/lib/security folder.

But I dont want to change anything in the default jre/lib/security
directory. ( Because that will introduce  a manual  step in our jre
installation )

I woudl rather save these files to a separate folder and then start
our application with a -D switch that will somehow point to this
folder.
( Something like -Djava.security.policy=.. )

Is there a way to do this ?


--sony