Which of the following is NOT one of the three categories of collections we have studied?

Group of answer choices

Set

List

Iterator

Map

Flag question: Question $2$

Question $21$ pts

Which of the following is NOT a wrapper class?

Group of answer choices

Character

Integer

String

Double

Flag question: Question $3$

Question $31$ pts

Which of the following kinds of things may be stored directly in an ArrayList?

Group of answer choices

None of the above

primitive values

Either of these two kinds of data

object references

Flag question: Question $4$

Question $41$ pts

In this declaration:

ArrayList polygon;

what do we call 'Point'?

Group of answer choices

a type argument

a wrapper class

a variable

a collection