This is a direct configuration to frame your page.
The first place to begin is by denying referrals from the other domain (granted this is not full proof, however it will stop the majority)
Step two is in implementing pages requests for your sites contents (regardless of type) to your OWN domain (s). (note; the desired effect here is to white-list those domains that you desire and deny ALL, which could get quite complicated and detailed.)
Once again to restate, I do suggest taking the time to review your logs (regardless of time required)to determine precisely which visitor IP made the initial request and then tested the phony domain framed link.
"Live Java" is the majority of the internet users. With IE dominating the browser market and Java active on the majority of those browsers, at the very minimum this amounts to a 75% share.