src/Size.java

   1 public class Size implements Comparable<Size> {
   2     private int max = 240;
   3     private int min = 40;
   4     private int size;
   5
   6     Size() {
   7     }
   8
   9     Size(int size) {
  10         setSize(size);
  11     }
  12
  13     public int getMin() {
  14         return min;
  15     }
  16
  17     public int getMax() {
  18         return max;
  19     }
  20
  21     public int getSize() {
  22         return size;
  23     }
  24
  25     public void setSize(int size) {
  26         if (validateSize(size)) {
  27             this.size = size;
  28         } else {
  29             throw new IllegalArgumentException("Size must be between " + this.getMin() + " and " + this.getMax());
  30         }
  31     }
  32
  33     private boolean validateSize(int size) {
  34         return (size >= getMin() && size <= getMax());
  35     }
  36
  37     @Override
  38     public int compareTo(Size size) {
  39         int distance = size.getSize() - this.getSize();
  40         if (distance >= 0)
  41             return distance;
  42         else
  43             return -distance;
  44
  45     }
  46 }