Java Swing：将JButton更改为图像按钮

Question

我一直在尝试这几个小时。我想将每个JButton组件更改为图像按钮（它们是单选按钮，这就是为什么变量名称没有意义）。内部的for循环只显示按钮下的所有图像。每个图像都被称为Option1，Option2等。所以我一直试图摆脱for循环，只有10个按钮，上面有你可以点击的图像。

如果有人能帮我解决这个问题会很棒。我所能做的就是使用图像创建按钮，但按钮出现在完全不同的窗口上。

public class JDialog2 extends JDialog {

private final JPanel contentPanel = new JPanel();

/**
 * Create the dialog.
 */
public JDialog2(Quiz quiz) {

    setBounds(100, 100, 450, 600);
    getContentPane().setLayout(new BorderLayout());
    contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
    getContentPane().add(contentPanel, BorderLayout.CENTER);
    contentPanel.setLayout(null);

    JLabel lblNewLabel_1 = new JLabel("2、Favourite subject at Hogwarts");
    lblNewLabel_1.setFont(new Font("Arial", Font.PLAIN, 14));
    lblNewLabel_1.setBounds(94, 10, 248, 15);
    contentPanel.add(lblNewLabel_1);
    ButtonGroup btGroup = new ButtonGroup();

    for(int i=1; i<=7; i++) {
          ImageIcon image1 = new ImageIcon("Option" + i + ".jpg");
          image1.setImage(image1.getImage().getScaledInstance(50, 50, Image.SCALE_DEFAULT));
          JLabel imageLablel1=new JLabel(image1);  
          contentPanel.add(imageLablel1);  
          imageLablel1.setBounds(29, 75 * i - 25, 50, 50); 
    }

    JButton radioButton_1 = new JButton("1.Care of Magical Creatures");
    radioButton_1.setBounds(29, 25, 226, 23);
    contentPanel.add(radioButton_1);

    JButton radioButton_2 = new JButton("2.Charms");
    radioButton_2.setBounds(29, 50, 158, 23);
    contentPanel.add(radioButton_2);

    JButton radioButton_3 = new JButton("3.Defense Against the Dark Arts");
    radioButton_3.setBounds(29, 75, 255, 23);
    contentPanel.add(radioButton_3);

    JButton radioButton_4 = new JButton("4.Divination");
    radioButton_4.setBounds(29, 100, 121, 23);
    contentPanel.add(radioButton_4);

    JButton radioButton_5 = new JButton("5.Herbology");
    radioButton_5.setBounds(29, 125, 179, 23);
    contentPanel.add(radioButton_5);

    JButton radioButton_6 = new JButton("6.History of Magic");
    radioButton_6.setBounds(29, 150, 158, 23);
    contentPanel.add(radioButton_6);

    JButton radioButton_7 = new JButton("7.Muggle Studies");
    radioButton_7.setBounds(29, 175, 121, 23);
    contentPanel.add(radioButton_7);

    JButton radioButton_8 = new JButton("8.Potions");
    radioButton_8.setBounds(29, 200, 121, 23);
    contentPanel.add(radioButton_8);

    JButton radioButton_9 = new JButton("9.Study of Ancient Runes");
    radioButton_9.setBounds(29, 220, 255, 23);
    contentPanel.add(radioButton_9);

    JButton radioButton_10 = new JButton("10.Transfiguration");
    radioButton_10.setBounds(29, 245, 179, 23);
    contentPanel.add(radioButton_10);

    btGroup.add(radioButton_1);
    btGroup.add(radioButton_2);
    btGroup.add(radioButton_3);
    btGroup.add(radioButton_4);
    btGroup.add(radioButton_5);
    btGroup.add(radioButton_6);
    btGroup.add(radioButton_7);
    btGroup.add(radioButton_8);
    btGroup.add(radioButton_9);
    btGroup.add(radioButton_10);

    JButton btnCommit = new JButton("Commit");
    btnCommit.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            Question question = quiz.getNextQuestion();
            int choice = 0;
            Enumeration<AbstractButton> en = btGroup.getElements();
            while (en.hasMoreElements()) {
                AbstractButton ab = en.nextElement();
                choice++;
                if (ab.isSelected()) {
                    break;
                }
            }
            question.setSelectedAnswer(choice - 1);
            JDialog3 dialog3 = new JDialog3(quiz);
            dialog3.setVisible(true);
            exit();
        }
    });
    btnCommit.setBounds(300, 138, 93, 23);
    contentPanel.add(btnCommit);


}
public void exit(){
    this.setVisible(false);
}
}