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AP Computer Science A Videos 108 videos

AP Computer Science 3.5 Classes and Objects
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AP Computer Science: Classes and Objects Drill 3, Problem 4. Which of the following are objects?

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AP Computer Science 2.1 Program Development 190 Views


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Description:

AP Computer Science 2.1 Program Development. The approach used in this project is an example of which of the following?

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Transcript

00:00

Thank you We sneak and here's your shmoop fuse you're

00:05

brought to you by penguins who feel discriminated against during

00:09

casual fridays All right you've been assigned to a project

00:12

in which you'll be writing a collection of classes in

00:15

java in order to model the various species of penguins

00:18

in the world today super class is penguin with a

00:22

hierarchy of sub classes organized by genus and species Your

00:28

class hierarchy will be used to model penguins in zoos

00:31

and wildlife preserves all over the world Super class england

00:35

is declared as the following but the approach used in

00:39

this project is an example of which of the following

00:43

pop down please roman numeral thing All right let's go

00:49

let's mix it up and start from the bottom Our

00:52

dad encapsulation is the process of hiding data through private

00:55

variables so that others cannot access it In this case

01:00

the penguins name is declared his private because you know

01:03

penguins really private This is a good example of data

01:06

encapsulation Yup Second option talks about odd decorated development which

01:12

is the use of different objects that work together to

01:14

make the program run well in this case the penguin

01:17

Suit class and it's sub classes could be used to

01:19

model a real world population of penguins This program adequately

01:23

uses object oriented development Finally we get to our last

01:27

option Well really our first we've talked about top down

01:30

development This is the approach to writing programs where all

01:33

the general stuff is made first and then the more

01:35

specific stuff is building so useful approach It doesn't really

01:39

apply to this program That leaves us with two and

01:42

three is our answer which corresponds choice b till next 00:01:46.668 --> [endTime] time Remember the penguin is mightier than the sword

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