A5Q2: Test of the class Item

Superman I: Book, 24, 3
Harry Potter VI: DVD, 35, 5
HALO 3: Video game, 38, 1. Result: true
Error: No copy of 'HALO 3' is available.
HALO 3: Video game, 38, 0. Result: false
HALO 3: Video game, 38, 1.