Holden first meets Jane when (a) his mother complains about Jane´s dog relieving himself on the Caulfields´ lawn; (b) she is in English class; (c) they both miss the bus.

a) his mother complains about Jane´s dog relieving himself on the Caulfields´ lawn

"Jane Gallagher," I said. I even got up from the washbowl when he said that. I damn near dropped dead. "You're damn right I know her. She practically lived right next door to me, the summer before last. She had this big damn Doberman pinscher. That's how I met her. Her dog used to keep coming over in our--"