the second Objects lab.

TicketMachine.java 2.9KB

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  1. /**
  2. * TicketMachine models a naive ticket machine that issues
  3. * flat-fare tickets.
  4. * The price of a ticket is specified via the constructor.
  5. * It is a naive machine in the sense that it trusts its users
  6. * to insert enough money before trying to print a ticket.
  7. * It also assumes that users enter sensible amounts.
  8. *
  9. * @author David J. Barnes and Michael Kolling
  10. * @version 2008.03.30
  11. */
  12. class TicketMachine
  13. {
  14. // The price of a ticket from this machine.
  15. private int price;
  16. // The amount of money entered by a customer so far.
  17. private int balance;
  18. // The total amount of money collected by this machine.
  19. private int total;
  20. private int status;
  21. private int score;
  22. private int discount;
  23. /**
  24. * Create a machine that issues tickets of the given price.
  25. * Note that the price must be greater than zero, and there
  26. * are no checks to ensure this.
  27. */
  28. public TicketMachine()
  29. {
  30. price = 1000;
  31. balance = 0;
  32. total = 0;
  33. }
  34. public TicketMachine(int cost){
  35. price = cost;
  36. }
  37. /**
  38. * Return the price of a ticket.
  39. */
  40. public int getPrice()
  41. {
  42. return price;
  43. }
  44. public void setPrice(int ticketCost)
  45. {
  46. price = ticketCost;
  47. }
  48. /**
  49. * Return the amount of money already inserted for the
  50. * next ticket.
  51. */
  52. public int getBalance()
  53. {
  54. return balance;
  55. }
  56. public int getTotal()
  57. {
  58. return total;
  59. }
  60. /**
  61. * Receive an amount of money in cents from a customer.
  62. */
  63. public void insertMoney(int amount)
  64. {
  65. balance = balance + amount;
  66. }
  67. public void empty(int total){
  68. total = 0;
  69. }
  70. public void increase(int points){
  71. score += points;
  72. }
  73. public void discount(int amount){
  74. price -= amount;
  75. }
  76. public void prompt(){
  77. System.out.println("Please insert the correct amount of money.");
  78. }
  79. public void showPrice(){
  80. System.out.println("The price of a ticket is " + price + " cents.");
  81. }
  82. /**
  83. * Print a ticket.
  84. * Update the total collected and
  85. * reduce the balance to zero.
  86. */
  87. public void printTicket()
  88. {
  89. // Simulate the printing of a ticket.
  90. System.out.println("##################");
  91. System.out.println("# The BlueJ Line");
  92. System.out.println("# Ticket");
  93. System.out.println("# " + price + " cents.");
  94. System.out.println("##################");
  95. System.out.println();
  96. // Update the total collected with the balance.
  97. total = total + balance;
  98. // Clear the balance.
  99. balance = 0;
  100. int count = 0;
  101. int savings = price * discount;
  102. int mean = total/count;
  103. }
  104. }