added some comments to deck class

src/main/java/inf112/fiasko/roborally/objects/Deck.java

@@ -3,13 +3,23 @@ package inf112.fiasko.roborally.objects;
 import java.util.ArrayList;
 import java.util.Random;
 
+/**
+ * This class represents a deck of cards
+ */
 public class Deck {
     private ArrayList<ProgrammingCard> cardDeck;
 
+    /**
+     * Initalizes the card deck.
+     * @param cardDeck a list of starting cards.
+     */
     public Deck(ArrayList<ProgrammingCard> cardDeck){
         this.cardDeck=cardDeck;
     }
 
+    /**
+     * This method shuffles the cards in the deck so that they are in a random order
+     */
     public void shuffle() {
         Random randomNumber = new Random();
         for (int i = cardDeck.size() - 1; i > 0; i--) {
@@ -23,15 +33,25 @@ public class Deck {
 
         }
     }
+
+    /**
+     * draws the first card in the card deck
+     * @return first card in the card deck list
+     */
     public ProgrammingCard drawCard(){
         ProgrammingCard draw = cardDeck.get(0);
         cardDeck.remove(0);
         return draw;
     }
 
+    /**
+     * draws n cards for another card deck and adds it to this card deck
+     * @param n number of cards you want to draw from the other deck
+     * @param otherDeck the other card deck
+     */
     public void drawNCardsFromOtherDeck(int n, Deck otherDeck){
-        if (n<1 || n>otherDeck.getCards().size()){
-            throw new IllegalArgumentException("cant draw negativ cards or more cards then are in the deck");
+        if (n<1 || n>otherDeck.getCard().size()){
+            throw new IllegalArgumentException("cant draw negativ cards or more cards then are in the other deck");
         }
         else{
             for (int i=0;i<n;i++){
@@ -40,10 +60,18 @@ public class Deck {
         }
     }
 
+    /**
+     * draws the first card from the other deck and adds it to this deck
+     * @param otherCardDeck the other card deck
+     */
     public void drawCardOtherDeck(Deck otherCardDeck){
         cardDeck.add(otherCardDeck.drawCard());
     }
 
+    /**
+     * draws all the cards from this card deck
+     * @return returns a list of all the cards from this deck
+     */
     public ArrayList<ProgrammingCard> drawAllCard(){
         ArrayList<ProgrammingCard> allCards= new ArrayList<>();
         int cardDeckSize = cardDeck.size();
@@ -56,13 +84,26 @@ public class Deck {
         return allCards;
     }
 
-    public ArrayList<ProgrammingCard> getCards(){
+    /**
+     * gives a list of all the cards inn this deck
+     * @return a list of all the cards inn this deck
+     */
+    public ArrayList<ProgrammingCard> getCard(){
             return cardDeck;
     }
 
+    /**
+     * checks if this deck is empty
+     * @return true if empty false otherwise
+     */
     public Boolean isEmpty(){
         return cardDeck.isEmpty();
     }
+
+    /**
+     * gets the size of this deck
+     * @return size of the deck
+     */
     public int size(){
         return cardDeck.size();
     }