我無法使int成為數組的要素

Question

我遇到了彩票游戲問題，用戶選擇了6個復選框，它們生成了userPickedNumber，這些數字應該添加到數組中。 如您所見，運行代碼時會打印出數字，但是當您查看最終數組時，它會將前5個數字打印為“ 0”，並且僅正確輸入了最后一個數字。 我該如何處理？

另外，如果我需要用新代碼附加這個問題，我該怎么做？

        import java.awt.BorderLayout;
    import java.awt.Color;
    import java.awt.Container;
    import java.awt.FlowLayout;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.event.ItemEvent;
    import java.awt.event.ItemListener;
    import java.util.Arrays;

    import javax.swing.JButton;
    import javax.swing.JCheckBox;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;

    public class JLottery2 extends JFrame implements ItemListener {
        private String[] lotteryNumbers = { "1", "2", "3", "4", "5", "6", "7", "8",
        "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19",
        "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30" };
        private JPanel jp1 = new JPanel();
        private JPanel jp2 = new JPanel();
        private JPanel jp3 = new JPanel(new GridLayout(3, 10, 5, 5));
        private JLabel jl1 = new JLabel("The Lottery Game!!!!!");
        private JLabel jl2 = new JLabel(
        "To play, pick six number that match the randomly selected numbers.");
        private FlowLayout layout = new FlowLayout();
        private GridLayout gridBase = new GridLayout(3, 1, 5, 5);
        private GridLayout grid = new GridLayout(3, 10, 5, 5);
        private Font heading = new Font("Palatino Linotype", Font.BOLD, 24);
        private Font bodyText = new Font("Palatino Linotype", Font.BOLD, 14);
        private Color color1 = new Color(4, 217, 225);
        private Color color2 = new Color(4, 225, 129);
        private int maxNumber = 6;
        private int counter = 0;
        private int[] randomNum;
        private int[] userPickedNumbers;
        private int matchedNumbers = 0;
        private JCheckBox checkBox[] = new JCheckBox[lotteryNumbers.length];
        private String temp;
        Container con = getContentPane();

        public JLottery2() {
    super("The Lottery Game");
    con.setLayout(gridBase);
    con.add(jp1);
    jp1.setLayout(layout);
    jp1.add(jl1);
    jl1.setFont(heading);
    jp1.setBackground(color1);

    con.add(jp2);
    jp2.setLayout(layout);
    jp2.add(jl2);
    jl2.setFont(bodyText);
    jp2.setBackground(color1);

    con.add(jp3);
    jp3.setLayout(grid);
    for (int i = 0; i < lotteryNumbers.length; i++) {
        // JCheckBox checkBox[] = new JCheckBox[lotteryNumbers.length];
        checkBox[i] = new JCheckBox(lotteryNumbers[i]);
        jp3.add(checkBox[i]);
        jp3.setBackground(color2);
        checkBox[i].addItemListener(this);
    }

    setSize(500, 300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
}

public void itemStateChanged(ItemEvent e) {
    /*
     * actions take as user checks the JCheckBoxes
     */
    if (e.getStateChange() == ItemEvent.SELECTED && counter < maxNumber) {
        temp = ((JCheckBox) e.getSource()).getText();
        ((JCheckBox) e.getSource()).setEnabled(false);
        int intTemp = Integer.parseInt(temp);
        userPickedNumbers = new int[maxNumber];
        userPickedNumbers[counter] = intTemp;
        counter++;
        System.out.println("add to counter");
        System.out.println("the .getText() returns "
                + ((JCheckBox) e.getSource()).getText());
        System.out.println("the tempoaray int is  " + intTemp);
        System.out.println("the number of picks is " + counter);
        System.out.println("**************************************");
    }
    /*
     * actions take when the user has chosen 6 JCheckboxes
     */
    if (counter == maxNumber) {
        System.out.println("the picks have maxxed out");
        JCheckboxSetVisibleFalse();
        randNumber();
        compareResults();
    }
}

/*
 * creates an array of random lottery number called randomNum[]
 */
public void randNumber() {
    randomNum = new int[maxNumber];
    for (int i = 0; i < maxNumber; i++) {
        randomNum[i] = ((int) (Math.random() * 100) % lotteryNumbers.length + 1);
    }
    System.out.println("the randomNum array is "
            + Arrays.toString(randomNum));
}

/*
 * compares the userPickedNumbers[] to the randomNum[]
 */
private void compareResults() {
    System.out.println("the user picks are "
            + Arrays.toString(userPickedNumbers));
    int i = 0;// user
    int j = 0;// random
    do {
        if (userPickedNumbers[i] != randomNum[j]
                && j < randomNum.length - 1) {

            System.out.println("the user picked " + userPickedNumbers[i]
                    + " the random number is " + randomNum[j]);
            System.out.println("wrong guess " + j);
            System.out
                    .println("the location of the element in the fisrt array is "
                            + i);
            System.out
                    .println("the location of the element in the second array is "
                            + j);
            j++;

        } else if (userPickedNumbers[i] != randomNum[j] && j == 5) {

            System.out.println(userPickedNumbers[i] + randomNum[j]);
            System.out.println("one last wrong guess " + j);
            System.out.println("the location of the first array is " + i);
            j = 0;
            i++;

        } else if (userPickedNumbers[i] == randomNum[j]) {
            matchedNumbers++;
            i++;
            j = 0;
            System.out.println("the number of correct guesses are "
                    + matchedNumbers);
            System.out.println("the valur of j is" + j);
            System.out.println("the valur of i is" + i);

        } else if (randomNum[j] == randomNum.length
                && userPickedNumbers[i] == randomNum[j]) {
            j = 0;
            i++;
            matchedNumbers++;
        }

    } while (i < userPickedNumbers.length);

}

private void JCheckboxSetVisibleFalse() {
    for (int i = 0; i < lotteryNumbers.length; i++) {

        checkBox[i].setVisible(false);

    }
}

public static void main(String[] args) {
    JLottery2 frame = new JLottery2();
    frame.setVisible(true);
}

}

Answer 1

您將繼續在itemStateChanged事件處理程序中初始化userPickedNumbers ，這意味着，每次用戶單擊復選框時， userPickedNumbers其內容初始化為0

僅在游戲開始時初始化數組