Guest User

Untitled

a guest
Oct 14th, 2019
92
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
  1. import java.util.Scanner;
  2.  
  3. /**
  4. * CS 149 Exercise 6.3 Magic 8-Ball.
  5. *
  6. * @author Jordan Brink
  7. * @version 10/14/19
  8. */
  9. public class EightBall {
  10.  
  11. /**
  12. * Displays the given prompt, followed by "[yes/no]: ". Returns true if the
  13. * next line of user input is "y" or "yes" ignoring case, false otherwise.
  14. *
  15. * @param in the Scanner to use
  16. * @param prompt the text to display
  17. * @return true if yes, false if no
  18. */
  19. public static boolean inputYesNo(Scanner in, String prompt) {
  20.  
  21. System.out.print(prompt + "[yes/no]: ");
  22. String input = in.nextLine();
  23. return input.equalsIgnoreCase("y") || input.equalsIgnoreCase("yes");
  24. }
  25.  
  26. /**
  27. * Gets the next question from the user. The length of the question must be
  28. * between 1 and 60 characters, and the question must end with a '?'. This
  29. * method keeps asking the user for a question until they enter a valid one.
  30. *
  31. * @param in the Scanner to use
  32. * @param prompt the text to display
  33. * @return the user's question
  34. */
  35. public static String getQuestion(Scanner in, String prompt) {
  36. System.out.print(prompt);
  37. String input = in.nextLine();
  38.  
  39. while (input.length() >= 60) {
  40. System.out.println("Your question is too long");
  41. System.out.print(prompt);
  42. input = in.nextLine();
  43. }
  44.  
  45. while (!(input.endsWith("?"))) {
  46. System.out.println("Your question must end with a ?");
  47. System.out.print(prompt);
  48. input = in.nextLine();
  49. }
  50.  
  51. while (input.equals("")) {
  52. System.out.println("Your question is blank");
  53. System.out.println(prompt);
  54. input = in.nextLine();
  55. }
  56.  
  57. return input;
  58. }
  59.  
  60. /**
  61. * Simulate a Magic 8-Ball. Original code by Arch Harris and Nancy Harris.
  62. *
  63. * @param args command-line arguments
  64. */
  65. public static void main(String[] args) {
  66. Scanner in = new Scanner(System.in);
  67. System.out.println("Magic 8-Ball");
  68.  
  69. // run the program as long as the user wants
  70. while (inputYesNo(in, "\nDo you want to ask a question? ")) {
  71.  
  72. // get the next question
  73. String question = getQuestion(in, "What is your question? ");
  74. System.out.println();
  75.  
  76. // pick a random answer
  77. String answer;
  78. int randInt = (int) (Math.random() * 20 + 1);
  79. switch (randInt) {
  80. case 1:
  81. answer = "Signs point to yes.";
  82. break;
  83. case 2:
  84. answer = "Yes.";
  85. break;
  86. case 3:
  87. answer = "Reply hazy, try again.";
  88. break;
  89. case 4:
  90. answer = "Without a doubt.";
  91. break;
  92. case 5:
  93. answer = "My sources say no.";
  94. break;
  95. case 6:
  96. answer = "As I see it, yes.";
  97. break;
  98. case 7:
  99. answer = "You may rely on it.";
  100. break;
  101. case 8:
  102. answer = "Concentrate and ask again.";
  103. break;
  104. case 9:
  105. answer = "Outlook not so good.";
  106. break;
  107. case 10:
  108. answer = "It is decidedly so.";
  109. break;
  110. case 11:
  111. answer = "Better not tell you now.";
  112. break;
  113. case 12:
  114. answer = "Very doubtful.";
  115. break;
  116. case 13:
  117. answer = "Yes - definitely.";
  118. break;
  119. case 14:
  120. answer = "It is certain.";
  121. break;
  122. case 15:
  123. answer = "Cannot predict now.";
  124. break;
  125. case 16:
  126. answer = "Most likely.";
  127. break;
  128. case 17:
  129. answer = "Ask again later.";
  130. break;
  131. case 18:
  132. answer = "My reply is no.";
  133. break;
  134. case 19:
  135. answer = "Outlook good.";
  136. break;
  137. case 20:
  138. answer = "Don't count on it.";
  139. break;
  140. default:
  141. answer = "HUH?";
  142. break;
  143. }
  144.  
  145. // output the results
  146. System.out.printf("Question: %s\n", question);
  147. System.out.printf(" Answer: %s\n", answer);
  148. }
  149. System.out.println("Goodbye!");
  150. }
  151.  
  152. }
RAW Paste Data