Chapter 7

Question 1

Lists and tables of values can be stored in _____ and _____.

Answer 1

arrays, collections

Question 2

An array is a group of _____ (called elements or components) containing values that all have the same _____.

Answer 2

variables, type

Question 3

The _____ allows you to iterate through an array’s elements without using a counter.

Answer 3

enhanced for statement

Question 4

The number used to refer to a particular array element’s ______.

Answer 4

index (or subscript or position number)

Question 5

An array that uses two indices is referred to as a(n) _____ array.

Answer 5

two-dimensional

Question 6

Use the enhanced for statement ______ to walk through double array numbers.

Answer 6

for (double d : numbers)

Question 7

Command-line arguments are stored in ______.

Answer 7

An array of Strings args

Question 8

Use the expression ______ to receive the total number of arguments in a command line. Assume that command-line argments are stored in String[] args.

Answer 8

args.length

Question 9

Given the command java MyClass test, the first command-line argument is ______.

Answer 9

test

Question 10

A(n) ______ in the parameter list of a method indicates that the method can receive a variable number of arguments.

Answer 10

ellipsis(…)

Question 11

(T or F) An array can store many different types of values.

Answer 11

False. An array can store only values of the same type.

Question 12

(T or F) An array index should normally be of type float.

Answer 12

False. An array index must be an integer or an integer expression.

Question 13

(T or F) Command-line arguments are separated by commas.

Answer 13

False. Command-line arguments are separated by white space.