src/Size.java

   1 public class Size {
   2     private int max = 240;
   3     private int min = 40;
   4     private int defaultSize = 160;
   5     private int size;
   6
   7     Size() {
   8     }
   9
  10     Size(int size) {
  11         setSize(size);
  12     }
  13
  14     public int getMin() {
  15         return min;
  16     }
  17
  18     public int getMax() {
  19         return max;
  20     }
  21
  22     public int getDefaultSize() {
  23         return defaultSize;
  24     }
  25
  26     public int getSize() {
  27         return size;
  28     }
  29
  30     public void setSize(int size) {
  31         if (validateSize(size)) {
  32             this.size = size;
  33         } else {
  34             throw new IllegalArgumentException("Size must be between " + this.getMin() + " and " + this.getMax());
  35         }
  36     }
  37
  38     private boolean validateSize(int size) {
  39         return (size >= getMin() && size <= getMax());
  40     }
  41
  42     public int distanceTo(Size size) {
  43         int distance = size.getSize() - this.getSize();
  44         return Math.abs(distance);
  45     }
  46 }