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Inheritance, Abstraction, and Polymorphism Videos 17 videos

AP Computer Science 1.2 Inheritance, Abstraction, and Polymorphism
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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
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AP Computer Science 1.1 Inheritance, Abstraction, and Polymorphism. Which of the following are correct?

AP Computer Science 1.3 Inheritance, Abstraction, and Polymorphism
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AP Computer Science 1.3 Inheritance, Abstraction, and Polymorphism. Which of the following is true?

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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?

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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

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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