如果将JButtons选项作为放入JOptionPane，则需要指定单击它们时发生的情况。由于您似乎没有任何按钮Action或ActionListener绑定到按钮，因此什么也没有发生。
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
public class JOptionPaneTest {
public void createAndShowJOptionPane() {
final JButton b1 = new JButton("Yes, please");
b1.setName("yes_please");
final JButton b2 = new JButton("No, thx");
b2.setName("no_thx");
final JButton b3 = new JButton("Leave me alone");
b3.setName("leave_me_alone");
Object[] options = new Object[]{b1, b2, b3};
final JOptionPane optionPane = new JOptionPane("Message", JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_CANCEL_OPTION, null, options, options[2]);
final JDialog dialog = optionPane.createDialog("Title");
b1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(b1.getText());
optionPane.setValue(0);
dialog.dispose();
}
});
b2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(b2.getText());
optionPane.setValue(1);
dialog.dispose();
}
});
b3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(b3.getText());
optionPane.setValue(2);
dialog.dispose();
}
});
dialog.setVisible(true);
if ((Integer)optionPane.getValue() == 0) {
System.out.println("Woohoo!");
}
}
public static void main(String[] argv) {
SwingUtilities.invokelater(new Runnable() {
public void run() {
JOptionPaneTest test = new JOptionPanetest();
test.createAndShowJOptionPane();
}
});
}
}
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