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POIm trying to figure out how to deal a card from the deck in my card game class
 

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  1. POIm trying to figure out how to deal a card from the deck in my card game class
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    <p>Im finding this hard since im not allowed to use arrays for the Deck class instead i have to create an object for it like <code>private Deck deck;</code>(you 'll see what i mean in the code)</p> <p>This method takes a card from the deck and adds it to the player's hand.</p> <p>Heres the Card, Deck, Game Class</p> <pre><code>public class Card { public static final String HEARTS = "hearts"; public static final String DIAMONDS = "diamonds"; public static final String CLUBS = "clubs"; public static final String SPADES = "spades"; private String description; private String suit; private int value; public Card() { description = "Joker"; suit = "Spades"; value = 0; } /** * Constructor for objects of class Card * @param description e.g. "Ten" * @param suit e.g. "Hearts" * @param value e.g. 10 */ public Card(String description, String suit, int value) { setDescription(description); setSuit(suit); setValue(value); } /** * Gets the suit. * @return suit as a String */ public String getSuit() { return suit; } /** * Gets the value. * @return value as an int */ public int getValue() { return value; } /** * Gets the description. * @return description as a String */ public String getDescription() { return description; } /** * Sets the suit * @param suit e.g."Hearts" */ public final void setSuit(String suit) { if((suit != null)&amp;&amp; (suit.equalsIgnoreCase(HEARTS)) || (suit.equalsIgnoreCase(DIAMONDS)) || (suit.equalsIgnoreCase(CLUBS))|| (suit.equalsIgnoreCase(SPADES))){ this.suit = suit; } else { this.suit = "unknown suit"; } } /** * Sets the description * @param description e.g. "Ten" */ public final void setDescription(String description) { if(description != null) { this.description = description; } else { this.description = "unknown description"; } } /** * Sets the value * @param value of this card e.g. 10 */ public final void setValue(int value) { if(value &gt; 0 &amp;&amp; value &lt;= 10) { this.value = value; } else { this.value = 0; } } /** * @return string containing description and suit */ public String getInfo() { return description + " of " + suit; } } </code></pre> <p>Deck Class:</p> <pre><code>import java.util.ArrayList; /** * Deck of cards. * * * */ public class Deck { private ArrayList&lt;Card&gt; deck; /** * Constructor for objects of class Deck * Creates a new container for Card objects */ public Deck() { deck = new ArrayList&lt;Card&gt;(); } /** * Add a card to the deck. * @param Card to be added */ public void addCard(Card cardToAdd) { deck.add(cardToAdd); } /** * Take the first card from the deck. * @return Card or null */ public Card takeCard() { if(deck.isEmpty()) { return null; } else { Card top = deck.get(0); deck.remove(0); return top; //return deck.remove(0); // get the top card } } /** * Show the contents of the deck. */ public void showDeck() { for(Card eachCard : deck) { System.out.println(eachCard.getDescription()+ " of " + eachCard.getSuit()); } } /** * Get the size of the deck * @return deck size */ public int getDeckSize() { return deck.size(); } } </code></pre> <p>Heres where im a little stuck. also with my </p> <pre><code>public void showHand() is getting a java.lang.NullPointerException at Game.showHand(Game.java:31) </code></pre> <p>Game Class:</p> <pre><code> import java.util.ArrayList; /** * Write a description of class Game here. * * @author (your name) * @version (a version number or a date) */ public class Game { private InputReader reader; private Deck deck; private ArrayList&lt;Card&gt; hand; private static final int MAX = 5; public Game() { reader = new InputReader(); deck = new Deck(); hand = new ArrayList&lt;Card&gt;(); } public void dealCard() { //&lt;---- not sure what to do with this one } } public void showHand()//&lt;----- not sure if this one is even right { //compiles fine but when i call the method it gets // for(Card eachCard: hand){ System.out.println(eachCard.getDescription()+ " of " + eachCard.getSuit()); } } } </code></pre> <p>Any help appreciated!! p.s i know how to add a card from the Card class but not sure how to do it from the Deck class</p>
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    1. COJust pointing out that you are forgetting about your `Card#getInfo()`-method in `Game#showHand()`. I'm referring to the `println`-statement
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      1. POIm trying to figure out how to deal a card from the deck in my card game class
      1. USmfaerevaag
    2. COseems that hand is empty, where is the code that initialize the hand?
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      1. POIm trying to figure out how to deal a card from the deck in my card game class
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    3. CObtw im not sure what you mean by initialize the hand? dont i do that with the arraylist?
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      1. POIm trying to figure out how to deal a card from the deck in my card game class
      1. USuser2368486
 

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