Java Swing - 如何擴(kuò)展JList以創(chuàng)建復(fù)選框列表

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import java.awt.Color;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.DefaultListCellRenderer;
import javax.swing.DefaultListModel;
import javax.swing.JCheckBox;
import javax.swing.JList;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
public class CheckBoxList extends JList {
  public CheckBoxList() {
    super();
    setModel(new DefaultListModel());
    setCellRenderer(new CheckboxCellRenderer());
    addMouseListener(new MouseAdapter() {
      @Override
      public void mousePressed(MouseEvent e) {
        int index = locationToIndex(e.getPoint());
        if (index != -1) {
          Object obj = getModel().getElementAt(index);
          if (obj instanceof JCheckBox) {
            JCheckBox checkbox = (JCheckBox) obj;
            checkbox.setSelected(!checkbox.isSelected());
 
 
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