Question

Create a Flash Card class. Flash Cards have a Question and an Answer, each of which are Strings. Your class should include a constructor, toString() and equals() methods. Write a main() method that creates an array of three Flash Cards, and prints each of them.

Answer 1

FlashCard.java

1. public class FlashCard {
2. String Question;
3. String Answer;
5. public FlashCard(String q, String a){
6. this.Question = q;
7. this.Answer = a;
8. }
10. public String toString(){
11. String output = "";
12. output += "Question: " + this.Question + "\\";
13. output += "Answer: " + this.Answer;
14. return output;
15. }
17. public boolean equals(String response){
18. if(this.Answer.equals(response)){
19. return true;
20. }
21. else{
22. return false;
23. }
24. }
25. }

Main.java

1. public class Main {
2. public static void main(String[] args) {
3. FlashCard card1 = new FlashCard("What is highest mountain?", "Everest");
4. FlashCard card2 = new FlashCard("What is natural satelite of earth?", "Moon");
5. FlashCard card3 = new FlashCard("Who is the first president of US?", "George Washington");
6. FlashCard cards [] = {card1, card2, card3};
8. for(int i=0; i < cards.length; i++){
9. System.out.println(cards[i]);
10. }
11. }
12. }

Step-by-step explanation:

In FlashCard.java, we create a FlashCard class with two instance variable, Question and Answer (Line 2 - 3). There is a constructor that takes two input strings to initialize the Question and Answer instance variables (Line 5-8). There is also a toString method that will return the predefined output string of question answer (Line 10 - 15). And also another equals method that will take an input string and check against with the Answer using string equals method. If matched, return True (Line 17 -24).

In Main.java, create three FlashCard object (Line 3-5) and then put them into an array (Line 6). Use a for loop to print the object (Line 8-10). The sample output is as follows:

Question: What is highest mountain?

Answer: Everest

Question: What is natural satelite of earth?

Answer: Moon

Question: Who is the first president of US?

Answer: George Washington