Dot class

public class Dot {

    private boolean isFruit;
    private boolean isBig;
    private boolean isNull;

    public Dot (boolean fruit, boolean big) {
        isFruit = fruit;
        isBig = big;
       isNull = false;
    }

    public Dot (String str) {
      if (str.equals("empty")){
        isNull = true;
      }
    }
      public boolean isNull () {
        return isNull;
      }

    public boolean isFruit () {
        return isFruit;
    }

    public boolean isBig () {
        return isBig;
    }

   public boolean isLittleDot() {
     return !isFruit() && !isBig();
   }

   public boolean isBigDot() {
     return !isFruit() && isBig();
   }

   public boolean isFruitDot() {
     return isFruit() && !isBig();
   }

}