ARRAYS - Java Programming: From Problem Analysis to Program Design - page 631

What is the output of the following program?
public class Exercise28
{

public static void main(String[] args)
{

String[] days = {"Sunday", "Monday", "Tuesday",
"Wednesday", "Thursday",
"Friday", "Saturday"};
NamesList familyMember =
new NamesList("William Johnson",
"Linda Johnson",
"Susan Johnson",
"Alex Johnson");

NamesList friends =
new NamesList("Amy Miller",
"Bobby Gupta",
"Sheila Mann",
"Chris Green",
"Silvia Smith",
"Randy Arora");

NamesList seasons =
new NamesList("Winter", "Spring",
"Summer", "Fall");
NamesList emptyList = new NamesList();
NamesList weekDays = new NamesList(days);
System.out.println("***** Family Members "

+ "*****");
System.out.println(familyMember);
System.out.println("\n*****

9

Friends "

+ "*****");
System.out.println(friends);
System.out.println("\n*****

Seasons "

+ "*****");
System.out.println(seasons);
System.out.println("\n***** Empty Names List "

+ "*****");
System.out.println(emptyList);
System.out.println("\n***** Week Days "

+ "*****");
System.out.println(weekDays);

}

}
29. Consider the following declarations:
static final int CAR_TYPES = 5;
static final int COLOR_TYPES = 6;

double [][] sales = new double [CAR_TYPES][COLOR_TYPES];
a. How many elements does the array sales have?
b. What is the number of rows in the array sales ?