3: Chapter 10

Question 1

Generic class

Answer 1

A class such as ArrayList that takes a type parameter to indicate what kind of values it will use.

Question 2

Wrapper class

Answer 2

A class that “wraps” (stores) primitive data as an object.

Question 3

Boxing

Answer 3

An automatic conversion from primitive data to a wrapped object of the appropriate type (e.g. an int boxed to form an Integer).

Question 4

Unboxing

Answer 4

An automatic conversion from a wrapped object to its corresponding primitive data (e.g. an Integer unboxed to yield an int).

Question 5

Comparison function

Answer 5

A well-defined procedure for deciding, given a pair of values, the relative order of the two values (less than, equal to, or greater than).

Question 6

Natural ordering

Answer 6

The order imposed on a type by its comparison function.

Question 7

ArrayList

Answer 7

A resizable implementation of the List interface.

Question 8

Map

Answer 8

A map is a collection of key-value pairs.