翻转jcombobox怎么样？

import javax.swing.*;
import java.awt.*;
import java.util.Collections;

public class ComboBoxDemo extends JFrame {
    private JComboBox<String> comboBox;

    public ComboBoxDemo() {
        setTitle("翻转JComboBox示例");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new FlowLayout());

        // 创建JComboBox对象并添加选项
        comboBox = new JComboBox<>();
        comboBox.addItem("选项1");
        comboBox.addItem("选项2");
        comboBox.addItem("选项3");
        comboBox.addItem("选项4");

        // 获取数据模型并翻转
        DefaultComboBoxModel<String> model = (DefaultComboBoxModel<String>) comboBox.getModel();
        Collections.reverse(model.getBackingList());

        // 更新JComboBox的数据模型
        comboBox.setModel(model);

        add(comboBox);
        pack();
        setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(ComboBoxDemo::new);
    }
}