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February 20, 2020 10:40
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| package unit_2; | |
| import java.util.Arrays; | |
| import java.util.HashSet; | |
| import java.util.Set; | |
| /** | |
| * SIMPLE QUIZ UNIT_2 UOPEOPLE. | |
| * A simple Quiz that asks uses a question. | |
| * @author ericel123 | |
| */ | |
| import javax.swing.JOptionPane; | |
| public class Quiz { | |
| public static void main(String[] args) { | |
| String question = "What is the name of the Stoic Roman emperor?\n"; | |
| question += "A. Seneca The Younger\n"; | |
| question += "B. Marcus Aurelius\n"; | |
| question += "C. Epictetus\n"; | |
| question += "D. Zeno The Citium\n"; | |
| question += "E. Donald J. Trump\n"; | |
| // Create a set for possible valid answers | |
| String[] posible_answers = {"A", "B","C", "D", "E"}; | |
| Set<String> answersset = new HashSet<String>(Arrays.asList(posible_answers)); | |
| // Error Responses | |
| String invalid; | |
| String incorrect; | |
| invalid = "<html><span style='font-size:2em; color: red;'><br>Invalid answer. Please enter A, B, C, D, or E.<br>"; | |
| incorrect = "<html><span style='font-size:2em; color: red;'><br>Incorrect! Try again.<br>"; | |
| // Dialog to prompt user for an answer | |
| String answer = JOptionPane.showInputDialog(question); | |
| while(true) { | |
| // To take care of Case Sensitive Answers | |
| answer = answer.toUpperCase(); | |
| // If valid answer | |
| if (answersset.contains(answer) && answer.equals("B")) { | |
| JOptionPane.showMessageDialog(null,"<html><span style='font-size:2em; color: green;'>Correct! It's Marcus Aurelius"); | |
| break; | |
| } else if(answersset.contains(answer) && !answer.equals("B")){ | |
| // If valid answer but incorrect answer | |
| // Clean up Errors | |
| if(question.indexOf(invalid) != -1) | |
| question = question.replace(invalid, ""); | |
| if(question.indexOf(incorrect) == -1) | |
| question += incorrect; | |
| // Prompt User for the right answer | |
| answer = JOptionPane.showInputDialog(question); | |
| } else { | |
| question.replace(incorrect, " "); | |
| // If it's invalid answer | |
| // Clean up Errors | |
| if(question.indexOf(incorrect) != -1) | |
| question = question.replace(incorrect, ""); | |
| if(question.indexOf(invalid) == -1) | |
| question += invalid; | |
| // Prompt User for the right answer | |
| answer = JOptionPane.showInputDialog(question); | |
| } | |
| } | |
| } | |
| } |
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