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AP Computer Science A Videos 108 videos
AP Computer Science 2.3 Classes and Objects. Which of the following is correct implementation of the Country class?
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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
Full Transcript
- 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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