我的问题是这样的：当我从牌组中抽取一张随机牌时我已经实例化了回报有时是正确的（即KING_CLUBS），但有时我会得到一个奇怪的（即SEVEN_）。这很奇怪，因为当甲板被实例化时，我在Deck构造函数中添加了一个打印行语句，以查看是否正确添加了ID。每次都没有失败，卡ID是正确的。
Blackjack的hitUser（）方法中的println用于检查正在绘制的卡的ID。有时它是正确的，有时则不是。谁能告诉我发生了什么以及为什么？
下面的可运行相关代码
我的卡类：
import java.util.*;
import javax.swing.*;
import java.awt.*;
public class Card {
//cardValues[] represents the tangible values attached to the card faces(ACE, ONE, TWO, THREE, ..., KING)
private final static int cardValues[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
private final static String cardIDs[] = {"ACE_", "TWO_", "THREE_", "FOUR_", "FIVE_", "SIX_", "SEVEN_", "EIGHT_", "NINE_", "TEN_", "JACK_", "QUEEN_", "KING_"};
private int value;
//Name of the card, i.e. "ACE";
private String cardID;
/**
* Constructor
* @param v - card value(I.e. 1 for Ace or 13 for King)
*/
public Card(int v){
setValue(v);
setCardID(v);
}
/**
* Constructor
* @param v - card value(I.e. 1 for Ace or 13 for King)
* @param id - a manually set ID for the card(used for 'illegal' card instantiation)
*/
public Card(int v, String id){
setValue(v);
setCardID(id);
}
/**
* Returns the card ID
* @return - the card ID of the respective card
*/
public String getCardID(){
return cardID;
}
/**
* Returns the card value
* @return - the number value of the respective card
*/
public int getValue(){
return value;
}
/**
* Setter method for card value
* @param v - value
*/
public void setValue(int v){
//Checks to see if v is a valid cardValue
if(v >= 1 && v <= 13){
value = v;
}
}
/**
* 'legal' setter method for card ID
* @param v - number value of the card
*/
public void setCardID(int v){
//Checks to see if v is a valid cardValue
if(v >= 1 && v <= 13){
cardID = cardIDs[v - 1];
}
}
/**
* 'illegal' setter method for card ID
* @param id - String value of the card ID
*/
public void setCardID(String id){
cardID = id;
}
public String getIcon(){
return "blackjack/" + this.getCardID() + ".png";
}
我的甲板课程：
import java.util.*;
import javax.swing.*;
import java.awt.*;
public class Deck {
private int numCards;
private String cardSuits[] = {"SPADES", "HEARTS", "DIAMONDS", "CLUBS"};
private static ArrayList<Card> cards = new ArrayList<Card>();
public static JLabel[] cardIcons = new JLabel[52];
public static int dealerHand, playerHand;
/**
* Constructor
*/
public Deck(){
//Will keep track of the index of the 52 cards created
int counter = 0;
for(int y = 0; y < 4; y++){
String suit = cardSuits[y];
for(int z = 1; z < 14; z++){
//Adds a new card and initializes it with its number value
cards.add(new Card(z));
//Replaces the card ID with a new ID containing the card suit (i.e. SPADES)
if(cards.get(counter).getCardID().indexOf("_") == cards.get(counter).getCardID().length() - 1){
String newID = cards.get(counter).getCardID() + suit;
cards.get(counter).setCardID(newID);
System.out.println(newID);
counter++;
} else {
}
}
}
}
/**
* Removes a card from the deck - gets rid of the object in the array of cards once it has been drawn
* @param id - the card to be removed
*/
public void removeCard(String id){
for(int i = 0; i < 52; i++){
if(cards.get(i).getCardID().equalsIgnoreCase(id)){
cards.remove(i);
}
}
}
/**
* Returns the object of the card within a deck
* @param c - the index of the card within the deck
* @return the card object
*/
public Card getCard(int c){
return cards.get(c);
}
/**
* Returns a random card from the array of cards in the deck
* @return - a random card object
*/
public Card getRandomCard(){
Random r = new Random();
int index = r.nextInt(cards.size());
return cards.get(index);
}
/**
* Resets the deck to its original, 'perfect' order
*/
public void reset(){
for(int x = 0; x<cards.size(); x++){
cards.remove(x);
}
//Will keep track of the index of the 52 cards created
int counter = 0;
for(int y = 0; y < 4; y++){
String suit = cardSuits[y];
for(int z = 0; z < 13; z++){
//Adds a new card and initializes it with its number value
cards.add(new Card(z));
//Replaces the card ID with a new ID containing the card suit (i.e. SPADES)
String newID = cards.get(counter).getCardID() + suit;
cards.get(counter).setCardID(newID);
counter++;
}
}
}
我的二十一点班：
import javax.swing.*;
import net.miginfocom.swing.MigLayout;
/**
* This class provides all of the functionality of the blackjack game
* @author Mohamed Amadou
*
*/
public class Blackjack extends JFrame implements ActionListener{
public MigLayout mig = new MigLayout("insets 0");
public Deck bjDeckHouse = new Deck(), bjDeckUser = new Deck();
public int dealerOffset = 65, userOffset = 65, houseHand = 0,
public final int MAX_BET = 100000;
public JPanel bj = new JPanel(new MigLayout("insets 0")), blackjack = new JPanel(new MigLayout("insets 0"));
public JButton hit;
public Blackjack(){
buildUI();
mig.layoutContainer(bj);
setSize(780, 700);
setResizable(false);
setLayout(mig);
setTitle("Blackjack");
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setVisible(true);
}
public void buildUI(){
getContentPane().add(bj);
bj.setBackgroundColor(Color.BLACK);
hit = new JButton("Hit");
hit.addActionListener(this);
bj.add(hit, "pos 570px 285px");
}
public void hitUser(int hand){
JPanel test = new JPanel(new MigLayout("insets 0"));
JFrame testFrame = new JFrame();
testFrame.add(test);
Card hitCard = bjDeckUser.getRandomCard();
hand += hitCard.getValue();
String position = "pos "+ userOffset + "px" + " 580px";
System.out.println(hitCard.getCardID());
bjDeckUser.removeCard(hitCard.getCardID());
turns++;
checkBust(hand);
testFrame.setSize(400, 400);
testFrame.setResizable(false);
testFrame.setLayout(mig);
testFrame.setTitle("Blackjack Rules");
testFrame.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
testFrame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource() == hit){
hitUser(userHand);
}
}
答案 0 :(得分：0)
您的问题在于reset()：
for(int x = 0; x<cards.size(); x++){
cards.remove(x);
}
这实际上并不会删除所有项目（只是播放它），您应该使用cards.clear()。由于牌组不是空的，而你又添加了52张牌，牌组将不正确。此外，您将获得奇怪的名称，可能还有SEVEN_CLUBS_SPADES和类似名称。
此外，您的代码有点令人困惑。套房应该是卡的属性，而不是卡的属性。卡应该是不可变的（根据使用情况，可能是枚举）。你有2个初始化代码片段（你应该有1）。您的＆＃34;商业模式中的GUI代码＆＃34;。只需要清理一些想法：）