Java How To Program, Late Objects, 11th Edition

... number of grades in the range 0–9, array[7] the number of grades in the range 70–79 and array[10] the number of 100 grades.

Fig. 6.6 Bar chart printing program.

 1   // Fig. 6.6: BarChart.java
 2   // Bar chart printing program.
 3
 4   public class BarChart {
 5      public static void main(String[] args) {
 6         int[] array = {0, 0, 0, 0, 0, 0, 1, 2, 4, 2, 1};
 7
 8         System.out.println("Grade distribution:");
 9
10         // for each array element, output a bar of the chart
11         for (int counter = 0; counter < array.length; counter++) {
12            // output bar label ("00-09: ", ..., "90-99: ", "100: ")
13            if (counter == 10) {
14               System.out.printf("%5d: ", 100);
15            }
16            else {
17               System.out.printf("%02d-%02d: ",
18                  counter * 10, counter * 10 + 9);
19            }
20
21            // print bar of asterisks