I believe J uses standard 10s by Dean Markley (.046-.010). However, being the supersticious dude he is, I read once that he replaces all the B strings (.013) with 14s (.014). I wouldn’t put it past him, but take anything you read about him with a grain of salt.
Here in the new Guitar Player it says .010-.046 strings made by Dean Markley, it also has a few things on his equipment too so you may want to pick up a copy. The cover has The Edge on it. That must be a pain in the ass though to buy 14’s after you just bought a full pack…oh wells.