e737. showing a dialog box.txt

这里面包含了一百多个JAVA源文件

// Modal dialog with OK button
    String message = "Line1\nLine2";
    JOptionPane.showMessageDialog(frame, message);
    
    // Modal dialog with yes/no button
    int answer = JOptionPane.showConfirmDialog(frame, message);
    if (answer == JOptionPane.YES_OPTION) {
        // User clicked YES.
    } else if (answer == JOptionPane.NO_OPTION) {
        // User clicked NO.
    }
    
    // Modal dialog with OK/cancel and a text field
    String text = JOptionPane.showInputDialog(frame, message);
    if (text == null) {
        // User clicked cancel
    }