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  // Craps class simulates the dice game craps.
  import java.util.Random;

  public class Craps
  {
     // create random number generator for use in method rollDice
     private Random randomNumbers = new Random();

     // enumeration with constants that represent the game status
     private enum Status { CONTINUE, WON, LOST };

     // constants that represent common rolls of the dice
     private final static int SNAKE_EYES = 2;
     private final static int TREY = 3;
     private final static int SEVEN = 7;
     private final static int YO_LEVEN = 11;
     private final static int BOX_CARS = 12;

     // plays one game of craps
     public void play()
     {
        int myPoint = 0; // point if no win or loss on first roll
        Status gameStatus; // can contain CONTINUE, WON or LOST

        int sumOfDice = rollDice(); // first roll of the dice

        // determine game status and point based on first roll
        switch ( sumOfDice )
        {
           case SEVEN: // win with 7 on first roll
           case YO_LEVEN: // win with 11 on first roll
              gameStatus = Status.WON;
              break;
           case SNAKE_EYES: // lose with 2 on first roll
           case TREY: // lose with 3 on first roll
           case BOX_CARS: // lose with 12 on first roll
              gameStatus = Status.LOST;
              break;
           default: // did not win or lose, so remember point
              gameStatus = Status.CONTINUE; // game is not over
              myPoint = sumOfDice; // remember the point
              System.out.printf( "Point is %d\n", myPoint );
              break; // optional at end of switch
        } // end switch

        // while game is not complete
        while ( gameStatus == Status.CONTINUE ) // not WON or LOST
        {
           sumOfDice = rollDice(); // roll dice again

           // determine game status
           if ( sumOfDice == myPoint ) // win by making point
              gameStatus = Status.WON;
           else
              if ( sumOfDice == SEVEN ) // lose by rolling 7 before point
                 gameStatus = Status.LOST;
        } // end while

        // display won or lost message
        if ( gameStatus == Status.WON )
           System.out.println( "Player wins" );
        else
           System.out.println( "Player loses" );
     } // end method play

     // roll dice, calculate sum and display results
     public int rollDice()
     {
        // pick random die values
        int die1 = 1 + randomNumbers.nextInt( 6 ); // first die roll
        int die2 = 1 + randomNumbers.nextInt( 6 ); // second die roll

        int sum = die1 + die2; // sum of die values

        // display results of this roll
        System.out.printf( "Player rolled %d + %d = %d\n",
           die1, die2, sum );

        return sum; // return sum of dice
     } // end method rollDice
  } // end class Craps