Java difference in key detection between Windows and Mac

Question

I have a JList with a key listener so that the user can remove an item from the list. On windows, this works fine. You press the delete key and the item is deleted. On mac, the program does not respond to the delete key. I use KeyEvent.VK_DELETE, and I thought it was a neutral way to detect special keys. Is there any other way to detect keystroke on Mac?

    studentJList.setModel(studentListModel);  // a custom model I wrote
    studentJList.addKeyListener(new KeyListener() {
        @Override
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_DELETE) {
                studentListModel.remove(studentJList.getSelectedIndex());
                studentJList.revalidate();
            }
        }

        @Override
        public void keyReleased(KeyEvent e) { }

        @Override
        public void keyTyped(KeyEvent e) { }
    });

Answer 1

eg

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ListDemo extends JPanel {

    private static final long serialVersionUID = 1L;
    private JFrame frame = new JFrame("ListDemo");
    private JList list;
    private DefaultListModel listModel;

    public ListDemo() {
        super(new BorderLayout());
        listModel = new DefaultListModel();
        listModel.addElement("Jane Doe");
        listModel.addElement("John Smith");
        listModel.addElement("Kathy Green");
        list = new JList(listModel);
        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        list.setSelectedIndex(0);
        list.setVisibleRowCount(5);
        JScrollPane listScrollPane = new JScrollPane(list);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(listScrollPane, BorderLayout.CENTER);
        frame.pack();
        frame.setVisible(true);
        setKeyBindings();
    }

    private void setKeyBindings() {
        list.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
                .put(KeyStroke.getKeyStroke("DELETE"), "clickDelete");
        list.getActionMap().put("clickDelete", new AbstractAction() {

            private static final long serialVersionUID = 1L;

            @Override
            public void actionPerformed(ActionEvent e) {
                int index = list.getSelectedIndex();
                if (index > -1) {
                    listModel.remove(index);
                }
            }
        });
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                ListDemo listDemo = new ListDemo();
            }
        });
    }
}

Answer 2

keybindings , .

. KeyAdapter Windows, Mac, , .