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AP Computer Science 2.3 Classes and Objects 191 Views


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Description:

AP Computer Science 2.3 Classes and Objects. Which of the following is correct implementation of the Country class?

Language:
English Language

Transcript

00:00

Hurry And here's your smoke du jour brought to you

00:05

by monster trucks They're totally crushing it Which of the

00:09

following is the correct implementation of the country class They

00:13

rebuilt this and here your pencil answers All right you

00:21

done reading on country Here we go All right well

00:23

this is certainly a huge mass of a question before

00:26

we read every single line and wait for our brains

00:28

to leak out of our ears Let's figure out what

00:30

we're supposed to be looking for The question asked for

00:33

the correct implementation of the country class and the description

00:37

suggests it's a class used to hold a few data

00:39

members access her methods for that data and a print

00:42

match All this stuff right here From this we can

00:45

probably assume the question is mostly about the proper way

00:49

to set up access or method And we know that

00:54

Access or methods They're supposed to be public methods that

00:56

access private data So let's just get rid of everything

00:59

which doesn't follow that rule first and we'll do that

01:02

by driving over the incorrect answers with a monster truck

01:05

in option a The strings air private and the access

01:07

er message are public That's A good sign so they

01:10

can stay for now And same with b option c

01:15

Here the strings are public We wouldn't need access or

01:21

methods at all if we were using public strings so

01:24

option sees that and he too Indeed the strings were

01:28

private in the methods or public as they should be

01:31

but look more closely The entire class is declared to

01:34

be private that leaves and be nearly identical Ah but

01:39

wait See it right there Option a is trying to

01:42

create a new class with the words new class but

01:45

that's not valid syntax to create a new public class

01:49

will need to be more like a cousin pee which

01:52

says public class instead Yeah nice try but we'll be 00:01:56.576 --> [endTime] going to be

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