I need to run the SIP vulnerability test suite at

	http://www.ee.oulu.fi/research/ouspg/protos/testing/c07/sip/

It is written in java, and you run it from the shell with commands like this:

	java -jar c07-sip-r2.jar -touri he@them.invalid -teardown -validcase

Being a complete java idiot, I figured I could just install jdk from pkgsrc 
and I would get what I wanted, but that seems not to be the case. When I 
run the java binary in the jdk's bin directory, it says it doesn't 
recognize the -jar option.

So what do I need to do to run .jar files?