// DrJava saved history v2
DormRoom room = new DormRoom(208, "Hill");//End of Interaction//
Freshman f = new Freshman("jo", room);//End of Interaction//
f.getName() 
//End of Interaction//
f.getRoom().getLocation()//End of Interaction//
DormRoom r = new DormRoom(176, "McNair");//End of Interaction//
f.changeRoom(r);//End of Interaction//
f.getRoom().getLocation()//End of Interaction//
f.address()//End of Interaction//
f.hasARoom()
//End of Interaction//
DormRoom rr; //rr is null//End of Interaction//
f.changeRoom(rr);//End of Interaction//
f.hasARoom()//End of Interaction//
f.getRoom().getLocation() //Error //End of Interaction//