这个小部分仍然是一个问题。
if (card.suit == Suit.DIAMOND || card.suit == Suit.HEART) {
g.setColor(Color.red);
} else {
g.setColor(Color.black);
}
我得到的错误是“找不到符号”，符号为“适合”。
当我把它更改为。
if (card.suit == PlayingCard.DIAMOND || card.suit == PlayingCard.HEART) {
g.setColor(Color.red);
} else {
g.setColor(Color.black);
}
我仍然收到错误“找不到符号”，符号为“ .DIAMOND ”和“ .HEART ”
我的 PlayingCard 类
public class PlayingCard
{
// Instance Data - all things common to all cards
private String cardFace; // king, q, j, 10 - 2, A
private int faceValue; // numberic value of the card
private char cardSuit; // hold suit of the card
private char suits[] = {(char)(003), (char)(004), (char)(005), (char)(006)};
Suit suit;
Rank rank;
// Constructor
public PlayingCard(int value, int suit)
{
faceValue = value;
setFace();
setSuit(suit);
}
// helper setFace()
public void setFace()
{
switch(faceValue)
{
case 1:
cardFace = "A";
faceValue = 14;
break;
case 11:
cardFace = "J";
break;
case 12:
cardFace = "Q";
break;
case 0:
cardFace = "K";
faceValue = 13;
break;
default:
cardFace = ("" + faceValue);
}
}
public void setSuit(int suit) // suit num between 0 and 3
{
cardSuit = suits[suit];
}
// other helpers
public int getFaceValue()
{
return faceValue;
}
public String getCardFace()
{
return cardFace;
}
public String toString()
{
return (cardFace + cardSuit);
}
public static enum Suit {
CLUB, DIAMOND, SPADE, HEART
}
public static enum Rank {
TWO("2"), THREE("3"), FOUR("4"), FIVE("5"), SIX("6"), SEVEN("7"),
EIGHT("8"), NINE("9"), TEN("10"), JACK("J"), QUEEN("Q"), KING("K"),
ACE("A");
private final String symbol;
Rank(String symbol) {
this.symbol = symbol;
}
public String getSymbol() {
return symbol;
}
}
}
这也是我所说的有问题的完整课程。 哪个是我的 GUI 类。
public class BlackjackGUI extends Applet {
public void init() {
// The init() method lays out the applet using a BorderLayout.
// A BlackjackCanvas occupies the CENTER position of the layout.
// On the bottom is a panel that holds three buttons. The
// HighLowCanvas object listens for ActionEvents from the buttons
// and does all the real work of the program.
setBackground( new Color(130,50,40) );
setLayout( new BorderLayout(3,3) );
BlackjackCanvas board = new BlackjackCanvas();
add(board, BorderLayout.CENTER);
Panel buttonPanel = new Panel();
buttonPanel.setBackground( new Color(220,200,180) );
add(buttonPanel, BorderLayout.SOUTH);
Button hit = new Button( "Hit!" );
hit.addActionListener(board);
hit.setBackground(Color.lightGray);
buttonPanel.add(hit);
Button stay = new Button( "Stay!" );
stay.addActionListener(board);
stay.setBackground(Color.lightGray);
buttonPanel.add(stay);
Button newGame = new Button( "New Game" );
newGame.addActionListener(board);
newGame.setBackground(Color.lightGray);
buttonPanel.add(newGame);
} // end init()
public Insets getInsets() {
// Specify how much space to leave between the edges of
// the applet and the components it contains. The background
// color shows through in this border.
return new Insets(3,3,3,3);
}
} // end class HighLowGUI
class BlackjackCanvas extends Canvas implements ActionListener {
// A class that displays the card game and does all the work
// of keeping track of the state and responding to user events.
DeckOfCards BJDeck = new DeckOfCards(); // A deck of cards to be used in the game.
BlackjackHand dealerHand; // Hand containing the dealer's cards.
BlackjackHand playerHand; // Hand containing the user's cards.
String message; // A message drawn on the canvas, which changes
// to reflect the state of the game.
boolean gameInProgress; // Set to true when a game begins and to false
// when the game ends.
Font bigFont; // Font that will be used to display the message.
Font smallFont; // Font that will be used to draw the cards.
BlackjackCanvas() {
// Constructor. Creates fonts and starts the first game.
setBackground( new Color(0,120,0) );
smallFont = new Font("SansSerif", Font.PLAIN, 12);
bigFont = new Font("Serif", Font.BOLD, 14);
doNewGame();
}
public void actionPerformed(ActionEvent evt) {
// Respond when the user clicks on a button by calling
// the appropriate procedure. Note that the canvas is
// registered as a listener in the BlackjackGUI class.
String command = evt.getActionCommand();
if (command.equals("Hit!"))
doHit();
else if (command.equals("Stand!"))
doStand();
else if (command.equals("New Game"))
doNewGame();
}
void doHit() {
// This method is called when the user clicks the "Hit!" button.
// First check that a game is actually in progress. If not, give
// an error message and exit. Otherwise, give the user a card.
// The game can end at this point if the user goes over 21 or
// if the user has taken 5 cards without going over 21.
if (gameInProgress == false) {
message = "Click \"New Game\" to start a new game.";
repaint();
return;
}
playerHand.addCard( BJDeck.getTopCard() );
if ( playerHand.getBlackjackValue() > 21 ) {
message = "You've busted! Sorry, you lose.";
gameInProgress = false;
}
else if (playerHand.getCardCount() == 5) {
message = "You win by taking 5 cards without going over 21.";
gameInProgress = false;
}
else {
message = "You have " + playerHand.getBlackjackValue() + ". Hit or Stand?";
}
repaint();
}
void doStand() {
// This method is called when the user clicks the "Stand!" button.
// Check whether a game is actually in progress. If it is,
// the game ends. The dealer takes cards until either the
// dealer has 5 cards or more than 16 points. Then the
// winner of the game is determined.
if (gameInProgress == false) {
message = "Click \"New Game\" to start a new game.";
repaint();
return;
}
gameInProgress = false;
while (dealerHand.getBlackjackValue() <= 16 && dealerHand.getCardCount() < 5)
dealerHand.addCard( BJDeck.getTopCard() );
if (dealerHand.getBlackjackValue() > 21)
message = "You win! Dealer has busted with " + dealerHand.getBlackjackValue() + ".";
else if (dealerHand.getCardCount() == 5)
message = "Sorry, you lose. Dealer took 5 cards without going over 21.";
else if (dealerHand.getBlackjackValue() > playerHand.getBlackjackValue())
message = "Sorry, you lose, " + dealerHand.getBlackjackValue()
+ " to " + playerHand.getBlackjackValue() + ".";
else if (dealerHand.getBlackjackValue() == playerHand.getBlackjackValue())
message = "Sorry, you lose. Dealer wins on a tie.";
else
message = "You win, " + playerHand.getBlackjackValue()
+ " to " + dealerHand.getBlackjackValue() + "!";
repaint();
}
void doNewGame() {
// Called by the constructor, and called by actionPerformed() if
// the use clicks the "New Game" button. Start a new game.
// Deal two cards to each player. The game might end right then
// if one of the players had blackjack. Otherwise, gameInProgress
// is set to true and the game begins.
if (gameInProgress) {
// If the current game is not over, it is an error to try
// to start a new game.
message = "You still have to finish this game!";
repaint();
return;
}
DeckOfCards BJDeck = new DeckOfCards(); // Create the deck and hands to use for this game.
dealerHand = new BlackjackHand();
playerHand = new BlackjackHand();
BJDeck.shuffleDeck();
dealerHand.addCard( BJDeck.getTopCard() ); // Deal two cards to each player.
dealerHand.addCard( BJDeck.getTopCard() );
playerHand.addCard( BJDeck.getTopCard() );
playerHand.addCard( BJDeck.getTopCard() );
if (dealerHand.getBlackjackValue() == 21) {
message = "Sorry, you lose. Dealer has Blackjack.";
gameInProgress = false;
}
else if (playerHand.getBlackjackValue() == 21) {
message = "You win! You have Blackjack.";
gameInProgress = false;
}
else {
message = "You have " + playerHand.getBlackjackValue() + ". Hit or stay?";
gameInProgress = true;
}
repaint();
} // end newGame();
public void paint(Graphics g) {
// The paint method shows the message at the bottom of the
// canvas, and it draws all of the dealt cards spread out
// across the canvas.
g.setFont(bigFont);
g.setColor(Color.green);
g.drawString(message, 10, getSize().height - 10);
// Draw labels for the two sets of cards.
g.drawString("Dealer's Cards:", 10, 23);
g.drawString("Your Cards:", 10, 153);
// Draw dealer's cards. Draw first card face down if
// the game is still in progress, It will be revealed
// when the game ends.
g.setFont(smallFont);
if (gameInProgress)
drawCard(g, null, 10, 30);
else
drawCard(g, dealerHand.getCard(0), 10, 30);
for (int i = 1; i < dealerHand.getCardCount(); i++)
drawCard(g, dealerHand.getCard(i), 10 + i * 90, 30);
// Draw the user's cards.
for (int i = 0; i < playerHand.getCardCount(); i++)
drawCard(g, playerHand.getCard(i), 10 + i * 90, 160);
} // end paint();
void drawCard(Graphics g, PlayingCard card, int x, int y) {
// Draws a card as a 80 by 100 rectangle with
// upper left corner at (x,y). The card is drawn
// in the graphics context g. If card is null, then
// a face-down card is drawn. (The cards are
// rather primitive.)
if (card == null) {
// Draw a face-down card
g.setColor(Color.blue);
g.fillRect(x,y,80,100);
g.setColor(Color.white);
g.drawRect(x+3,y+3,73,93);
g.drawRect(x+4,y+4,71,91);
}
else {
g.setColor(Color.white);
g.fillRect(x,y,80,100);
g.setColor(Color.gray);
g.drawRect(x,y,79,99);
g.drawRect(x+1,y+1,77,97);
if (card.suit == PlayingCard.DIAMOND || card.suit == PlayingCard.HEART) {
g.setColor(Color.red);
} else {
g.setColor(Color.black);
}
}
} // end drawCard()
} // end class BlackjackCanvas
答案 0 :(得分：0)
您遇到此问题的原因是您已将Suit声明为PlayingCard的静态嵌套类，并且您没有正确引用它。
为了解决这个问题，你应该将Suit移到它自己的班级并删除static修饰符。
你也可以通过引用这样的套装来解决这个问题：
PlayingCard.Suit.DIAMOND
但第一个解决方案更好，因为Suit似乎是PlayingCard的一个独特实体，所以它应该在它自己的类中。
答案 1 :(得分：0)
你离我不远：）
if (card.suit == Suit.DIAMOND || card.suit == Suit.HEART) {
g.setColor(Color.red);
} else {
g.setColor(Color.black);
}
这个是正确的（事实上，你也可以写PlayingCard.Suit.HEART，具体取决于你的import，而不是PlayingCard.HEART），但是card.suit存在可见性问题}。
您未在private字段中提供public，protected或suit，因此只能在其包中访问。
我想这段代码在另一个包中，所以你必须使用getter（推荐），或者将suit设置为public。