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Inheritance, Abstraction, and Polymorphism Videos 17 videos
APCS: Inheritance, Abstraction, and Polymorphism Drill 1, Problem 2. Which of the following is the correct way to begin writing your class?
AP Computer Science 1.1 Inheritance, Abstraction, and Polymorphism. Which of the following are correct?
AP Computer Science 1.3 Inheritance, Abstraction, and Polymorphism. Which of the following is true?
AP Computer Science 1.5 Inheritance, Abstraction, and Polymorphism 188 Views
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Description:
AP Computer Science 1.5 Inheritance, Abstraction, and Polymorphism. Which of the following implementations of the Dinghyprint function will have the desired effect?
Transcript
- 00:00
Thank you We sneak and here's your smoke too Sure
- 00:05
which was supposed to be brought to you by boats
- 00:08
but that ship has sailed Consider the following classes i
- 00:16
publicly all right the dinghy print function should print all
- 00:21
relevant information about a dinghy object Which of the following
Full Transcript
- 00:26
implementations of the dinghy print function will have the desired
- 00:30
effect All right And here your potential answers Okay well
- 00:36
choice one seems like a valid choice It uses sailboats
- 00:39
print method and then prints out the crew size Choice
- 00:42
Two seems ok at first glance too but if we
- 00:44
take a closer look we can see some majorly wrong
- 00:47
code dinghy attempts to access the variables my name and
- 00:51
holing directly This is illegal both those data fields or
- 00:56
private Nothing can access them directly except the class They're
- 00:59
in a very exclusive club Lastly let's take a look
- 01:02
at our third choice This time it gets the variables
- 01:05
my name and holing using getters Well this is the
- 01:12
only way you can access private variable so choice Three
- 01:15
adheres to java rules It seems like choices One and
- 01:18
three are answers That leaves us Is option d being
- 01:22
the correct answer We hope you'll tune in next time 00:01:25.066 --> [endTime] for some more fun
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