Arrays - Absolute Java - page 417

Scanner keyboard = new Scanner(System.in);
double hours = 0, sum = 0;
for (WorkDay oneDay : day)
{
System.out.println("Enter hours worked for " +
oneDay);
hours = keyboard.nextDouble();
sum = sum + hours;
}
System.out.println("Total hours work = " + sum);
}
}
import java.util.Scanner;
public class ForEachEnumDemo2
{
enum WorkDay {MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY};
public static void main(String[] args)
{
Scanner keyboard = new Scanner(System.in);
double hours = 0, sum = 0;
for (WorkDay oneDay : WorkDay.values())
{
System.out.println("Enter hours worked for " + oneDay);
hours = keyboard.nextDouble();
sum = sum + hours;
}
System.out.println("Total hours work = " + sum);
}
}
23. 0 1 2 3
0 1 2 3
0 1 2 3
0 1 2 3
24. If the array indices are out of bounds, then Java will halt the program with an error
message, so no other checks on the parameters are needed.
/**
Returns the grade that student number studentNumber received on
quiz number quizNumber.
*/
public int getGrade( int studentNumber, int quizNumber)
{
return grade[studentNumber][quizNumber];
}