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Inheritance, Abstraction, and Polymorphism Videos 17 videos
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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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