Book of tasks on programming. Old version
by Aliaksandr N. Prykhodzka
Java. Answers. J.19. Classes
J.19.1 7
J.19.2 144
J.19.3 21
J.19.4 11
J.19.5 20
J.19.6 32
J.19.7 28
J.19.8 112
J.19.9 10
J.19.10 5