/prog/ was a tolerable place up until the beginning of this year when it started to degenerate. I had no problem with /jp/ posters on
/prog/ prior to the beginning of this year, and I'm guessing it's a mass mixture of things that led
/prog/ to the sad state it's in today (reddit, migrants from other imageboard sites, the fact that 4chan is nearly three times more populated than it was just two years ago, etc.)
I wish all the shitposters and Java/PHP users move to /pr/ (
http://www.7chan.org/pr/), but that's just wishful thinking.