从JPanel中删除多个JComboBoxes

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;
import java.util.List;

public class RemoveJComboBoxesFromJPanel {
    public static void main(String[] args) {
        // 创建一个JFrame作为容器
        JFrame frame = new JFrame("Remove JComboBoxes Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);

        // 创建一个JPanel用于放置JComboBoxes
        JPanel panel = new JPanel();
        panel.setLayout(new FlowLayout());

        // 创建多个JComboBoxes并添加到JPanel中
        JComboBox<String> comboBox1 = new JComboBox<>();
        JComboBox<String> comboBox2 = new JComboBox<>();
        JComboBox<String> comboBox3 = new JComboBox<>();
        panel.add(comboBox1);
        panel.add(comboBox2);
        panel.add(comboBox3);

        // 创建一个按钮，点击按钮时删除JComboBoxes
        JButton button = new JButton("Remove JComboBoxes");
        button.addActionListener(e -> {
            removeJComboBoxes(panel);
            panel.revalidate();
            panel.repaint();
        });

        // 将JPanel和按钮添加到JFrame中
        frame.getContentPane().add(panel, BorderLayout.CENTER);
        frame.getContentPane().add(button, BorderLayout.SOUTH);

        // 显示JFrame
        frame.setVisible(true);
    }

    private static void removeJComboBoxes(JPanel panel) {
        List<JComboBox> comboBoxesToRemove = new ArrayList<>();

        // 遍历JPanel中的所有组件，找到所有的JComboBox组件
        for (Component component : panel.getComponents()) {
            if (component instanceof JComboBox) {
                comboBoxesToRemove.add((JComboBox) component);
            }
        }

        // 将找到的JComboBox组件从JPanel中移除
        for (JComboBox comboBox : comboBoxesToRemove) {
            panel.remove(comboBox);
        }
    }
}