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AP Computer Science Videos 113 videos

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AP Computer Science 1.3 Inheritance, Abstraction, and Polymorphism 177 Views


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Description:

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


Transcript

00:00

Thank you We sneak and here's your shmoop du jour

00:05

brought to you by the great who got stepped on

00:09

It didn't say anything but it let out a little

00:11

wine Consider the following class hierarchy diagram note and open

00:17

up arrow denotes an inheritance relationship and it closed down

00:22

arrow This thing denotes a composition relationship I got fruit

00:27

very citrusy but we did Following is true all right

00:31

roman numerals And let's go we're looking at statement one

00:38

let's recall What is a relationship it's and is a

00:43

relationship states that one class is a subclass or super

00:47

class of the other Well his fruit a subclass are

00:51

super class of grape Yeah well statement to suggest that

00:55

seed in fruit have a has a relationship Remember that

01:00

has a relationship Means that one glass contains a variable

01:04

that is an instance of the other well does fruits

01:07

contain a variable of seed type No no we can

01:11

tell from the diagram that not all fruits have seeds

01:16

And lastly statement three says that citrus and seed hava

01:20

has a relationship Well does the citrus class contain a

01:24

seed We'll definitely way intel from the up arrow in

01:27

the diagram and our answers The next time we'll check

01:30

out the very angry grapes the grapes of wrath We 00:01:35.566 --> [endTime] went there Sorry people Oh

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