January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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Answers to Self-Review Exercises (Sections G.6–G.13)
a) abstract.
b) concrete.
c) Polymorphism.
d) abstract.
e) downcasting.
a) False. An abstract class can include methods with implementations and abstract methods.
b) False. Trying to invoke a subclass-only method with a superclass variable is not allowed.
c) False. Only a concrete subclass must implement the method.
d) True.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.