这个样子:
btnSearch.registerKeyboardAction(  mylistener,//这是你自己定义的listener的实例
                                   KeyStroke.getKeyStroke(KeyEvent.VK_T,ActionEvent.CTRL_MASK,true),//这就是你定义的快捷键,看看jdk就知道
                                   JComponent.WHEN_IN_FOCUSED_WINDOW);