如何设置块捷键

Question

JMenuItem jMenuItem1 = new JMenuItem();
  JMenuItem jMenuItem2 = new JMenuItem();
  jMenuItem1.setText("打开");
  jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(79, java.awt.event.KeyEvent.CTRL_MASK, true));
  jMenuItem2.setText("保存");
  jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(83, java.awt.event.KeyEvent.CTRL_MASK, true));

Answer 1

如果没有对应菜单，
比如说alt+F5退出呢？