Action closeWindow = new AbstractAction("Close Window") {
   @Override public void actionPerformed(ActionEvent e) {
     // window closing code here
   }
 };
 closeWindow.putValue(Action.ACCELERATOR_KEY,KeyStroke.getKeyStroke(
     KeyEvent.VK_W,Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));

把这个动作放在菜单上的菜单上.加速器将在Windows上为Ctrl W.

在每个JFrame(假设有多个)中使用Keybinding API可能会更好地将主面板绑定到其(WHEN_FOCUSED)输入映射中的相同KeyStroke,使其在关闭框架的动作映射中的操作.

public class ClosableWindow extends JFrame {
  public void setUp() {
    JPanel mainPanel = createMainPanel();

    int mask = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
    KeyStroke closeKey = KeyStroke.getKeyStroke(KeyEvent.VK_W,mask);

    mainPanel.getInputMap().put(closeKey,"closeWindow");        

    mainPanel.getActionMap().put("closeWindow",new AbstractAction("Close Window") {
          @Override public void actionPerformed(ActionEvent e) {
            setVisible(false);
            dispose();
          }
        });

    getContentPane().add(mainPanel);      
  }
}