src/Weight.java

   1 public class Weight {
   2     private int weight;
   3
   4     Weight(int weight) {
   5         setWeight(weight);
   6     }
   7
   8     public int getWeight() {
   9         return weight;
  10     }
  11
  12     public void setWeight(int weight) {
  13         if (validateWeight(weight)) {
  14             this.weight = weight;
  15         } /* FIXME: raise an error */
  16     }
  17
  18     private boolean validateWeight(int weight) {
  19         return (weight > 0);
  20     }
  21 }