Classes to model flashcards

CodeCard.java

abstract class CodeCard implements FlashCard {
  protected String question;
  protected String output;
  
  public JavascriptCard(String q, String o) {
    question = q;
    output = o;
  }
  
  abstract render...
  
  public JSONValue toJSON() { ... }
  
  abstract Boolean evaluate(String code);
}

Deck.java

class Deck {
  
  ArrayList<FlashCard> cards;
  
  public Deck(ArrayList<FlashCard> initialCards) {
    cards = initialCards;
  }
  
  public Node renderListView() {
    // render all cards in one box
  }
  
  public Node renderTileView() {
    //render tile of deck summary
  }
}

FlashCard.java

interface FlashCard {
    public JSONValue toJSON();
    public Node renderFront();
    public Node renderBack();
    public Boolean evaluate(String in);
}

FrontBackCard.java

class FrontBackCard implements FlashCard {
    protected String back;
    protected String front;
    
    public FrontBackCard(String f, String b) {
        back = b;
        front = f;
    }
  
    public Node renderFront() {
      // creates javafx node and setup gui components
    }
    
    public Node renderBack() {
      // like renderFront
    }
    
    public JSONValue toJSON() {
        // my json class method calls 
        // create a json object and storing:
        // type, front, back
    }
    
    public Boolean evaluate(String in) {
        return in.equals(back);
    }
}

JavaScriptCard.java

public JavascriptCard extends CodeCard {
  public JavascriptCard(String f, String o) {
    super(f, s);
  }
  
  ...render and tojson...
  
  public Boolean evaluate(String code) {
    return TimothyUtil.evalJS(code).equals(output);
  }
}

Main.java

public class Main
{
    public static void main(String[] args) {
        FlashCard c = new FrontBackCard("Which year did the NASA first land on the moon", "1969");
        System.out.println(c.evaluate("1969")); \\ true
    }
}

MultipleChoiceCard.java

class MultipleChoiceCard extends FrontBackCard {
  protected ArrayList<String> choices;
  
  public MultipleChoiceCard(String f, String b, ArrayList<String> c) {
    super(f, b);
    choices = c;
  }
  
  public override renderFront() {
    // show choices as well
  }
  
  public override JSONValue toJSON() {
    // store choices and different type name
  }
}