public class Scorekeeper {
   String homeTeam, visitingTeam;
   int inning;
   boolean topOfInning; 
   int home, visitors;         // score
   int balls, strikes, outs;   // count
   boolean gameOver;

   Scorekeeper(String homeTeam, String visitingTeam) {
      this.homeTeam = homeTeam;
      this.visitingTeam = visitingTeam;
      inning = 1;
      topOfInning = true;
      home = visitors = balls = strikes = outs = 0;
      gameOver = false;
   }

   void resetBallsAndStrikes() {
      balls = strikes = 0;
   }

   public void hit() {
      resetBallsAndStrikes();
   }

   public void ball() {
      balls++;
      if (balls == 4)
         walk();
   }

   public void strike() {
      strikes++;
      if (strikes == 3)
         batterOut();
   }

   public void foul() {
      if (strikes < 2)
         strike();
   }

   public void walk() {
      resetBallsAndStrikes();
   }

   public void batterOut() {
      resetBallsAndStrikes();
      out();
   }

   public void out() {
      outs++;
      if (outs == 3)
         newHalf();
   }

   public void run() {
      if (topOfInning)
         visitors++;
      else {
         home++;
         gameOver = ((inning >= 9) && (home > visitors));
      }
   }

   void newHalf() {
      resetBallsAndStrikes();
      outs = 0;
      if ((inning > 8) && (topOfInning == false) && (home != visitors))
        gameOver = true;
      else {
         if (!topOfInning)
            inning++;
         topOfInning == !topOfInning;
      }
   }

   public String toString() {
      if gameOver
         return ("Final Score after " + inning + " innings: " + score());
      else {
         String topBot;
         if topOfInning
           topBot = "top"
         else
           topBot = "bottom"
         return ("In the " + topBot + " of inning " + inning + "with " +
                 balls + " balls, " + strikes + " strikes, and "
                 + outs + " outs, it's " + score());
      }
   }
   
   String score() {
      if (home > visitors)
         return (homeTeam + " over " + visitingTeam + ", "
                 + home + " to " + visitors + ".");
      else if (visitors > home)
         return (visitingTeam + " over " + homeTeam + ", "
                 + visitors + " to " + home + ".");
      else
         return (visitingTeam + " and " + homeTeam + " tied "
                 + home + " to " + visitors + ".");
   }
}