/* An instance of this class represents a coin that can be tossed,
** (randomly) resulting in either HEADS or TAILS.
*/
public class TossableCoin1 {

   // instance variable
   // -----------------

   private boolean headsShowing;  // true if HEADS, false if TAILS

   /* Initializes this tossable coin to be "showing" HEADS.
   */
   public TossableCoin1() {
      headsShowing = true; 
   }

   // observers
   // ---------

   /* Reports whether this coin is showing HEADS.
   */
   public boolean isHeads() { return headsShowing; }

   /* Reports whether this coin is showing TAILS.
   */
   public boolean isTails() { return !headsShowing; }

   /* Returns a string indicating which of the two faces
   ** is "showing".
   */
   public String toString() {
      String result;
      if (isHeads()) 
         { result = "HEADS"; }
      else 
         { result = "TAILS"; }
      return result;
   }


   // mutators
   // --------

   public void toss() {
      headsShowing = Math.random() < 0.5;

      //Note that the code above is equivalent to the more verbose
      //
      // if (Math.random()) < 0.5) 
      //    { headsShowing = true; }
      // else 
      //    { headsShowing = false; }
   }

}