Arrays - Absolute Java - page 377

Display 6.6 Display 6.4 Redone Using the Class PartiallyFilledArray (part 1 of 2)

Sample dialog is the same as in Display 6.4.

1 import java.util.Scanner;

2 /**
3 Demonstrates Using the class PartiallyFilledArray,
4 */
5 public class GolfScoresVersion2
6 {

7 public static final int MAX_NUMBER_SCORES = 10;

8 /**
9 Shows the differences between each of a list of golf scores and
their average.
10 */
11 public static void main(String[] args)
12 {
13 PartiallyFilledArray score =
14 new PartiallyFilledArray(MAX_NUMBER_SCORES);

15 System.out.println("This program reads golf scores and shows");
16 System.out.println("how much each differs from the average.");

17 System.out.println("Enter golf scores:");
18 fillArray(score);
19 showDifference(score);
20 }
21 /**
22 Reads values into the PartiallyFilledArray a.
23 */
24 public static void fillArray(PartiallyFilledArray a)
25 {
26 System.out.println("Enter up to " + a.getMaxCapacity()
27 + " nonnegative numbers, one per line.");
28 System.out.println("Mark the end of the list with a negative
number");
29 Scanner keyboard = new Scanner(System.in);
31
32 double next = keyboard.nextDouble();
31 while ((next >= 0) && (!a.full()))
33 {
34 a.add(next);
35 next = keyboard.nextDouble();
36 }
37 if (next >= 0)
38 System.out.println("Could only read in "
39 + a.getMaxCapacity() + " input values.");
40 }

(continued)