Try using...
KeyStroke.getKeyStroke(int keyCode, int modifiers, boolean onKeyRelease)
Updated with working example
public class KeyBindingsTest {
public static void main(String[] args) {
new KeyBindingsTest();
}
public KeyBindingsTest() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new KeyBindingPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public static class KeyBindingPane extends JPanel {
private JTextArea textArea;
public KeyBindingPane() {
setLayout(new BorderLayout());
add(new JScrollPane((textArea = new JTextArea())));
InputMap im = getInputMap(WHEN_IN_FOCUSED_WINDOW);
ActionMap am = getActionMap();
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_Z, KeyEvent.ALT_DOWN_MASK, false), "Released");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_Z, KeyEvent.ALT_DOWN_MASK, true), "Pressed");
am.put("Released", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("released");
textArea.append("Released\n");
}
});
am.put("Pressed", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("pressed");
textArea.append("Pressed\n");
}
});
setFocusable(true);
requestFocusInWindow();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(100, 100);
}
}
}
Note, I've never seen KeyEvent.META_DOWN_MASK
work on Windows...