This is hilariously unenforceable.
Maybe if the judge had said for him not to have children with any women who can’t afford to raise them...
Or give him a male chastity belt... (they do exist, you know)
(Pictures of one popular brand, sort of NSFW, but on an existential level.)
http://i.imgur.com/PqQWWMn.jpg
Or maybe the judge should offer him an all-expense-paid vasectomy.