如何在MultiSelection列表框中保留复选框选择？

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;

public class MultiSelectionListBoxExample extends JFrame {
    private JList<String> listBox;
    private List<String> selectedItems;

    public MultiSelectionListBoxExample() {
        selectedItems = new ArrayList<>();

        String[] data = {"Option 1", "Option 2", "Option 3", "Option 4", "Option 5"};
        listBox = new JList<>(data);
        listBox.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

        JScrollPane scrollPane = new JScrollPane(listBox);
        getContentPane().add(scrollPane, BorderLayout.CENTER);

        JButton button = new JButton("Get Selected Items");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                List<String> selectedValues = listBox.getSelectedValuesList();
                selectedItems.clear();
                selectedItems.addAll(selectedValues);

                // Print selected items
                for (String item : selectedItems) {
                    System.out.println(item);
                }
            }
        });
        getContentPane().add(button, BorderLayout.SOUTH);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(300, 200);
        setVisible(true);
    }

    public static void main(String[] args) {
        new MultiSelectionListBoxExample();
    }
}