在自定义JInternalFrame中调用JDialog

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JInternalFrame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class CustomInternalFrame extends JInternalFrame {

    public CustomInternalFrame() {
        // 设置内部窗口的属性
        setTitle("Custom Internal Frame");
        setSize(400, 300);
        setClosable(true);
        setMaximizable(true);
        setResizable(true);

        // 创建一个按钮
        JButton openDialogButton = new JButton("Open Dialog");
        openDialogButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 创建一个JDialog对象
                JDialog dialog = new JDialog();
                dialog.setTitle("Custom Dialog");
                dialog.setSize(300, 200);
                dialog.setModal(true);

                // 向JDialog中添加组件
                dialog.add(new JButton("OK"));

                // 显示JDialog
                dialog.setVisible(true);
            }
        });

        // 添加按钮到内部窗口
        add(openDialogButton);
    }
}