I'm taking care of a stray cat we got in February, his owners threw him out in the cold. as we got to know his it became clear that his has some problems like, at first he would hiss at our other cat, a female, he jumps on everything knocking things down, he tries to scratch the walls and the TV too, he bits when you pet him on near his belly area, his hides under the bed, chair and close corners, and he pees on the couch, carpet, and bed. his other owners had him declawed, and I'm not sure if he's fix or not.

i want to know how cat i stop him from peeing on everything?
his name is J.B.