The AccessibleKeyBinding interface should be supported by any object that has a keyboard bindings such as a keyboard mnemonic and/or keyboard shortcut which can be used to select the object.

  The AccessibleKeyBinding interface should be supported by any object
that has a keyboard bindings such as a keyboard mnemonic and/or keyboard
shortcut which can be used to select the object. This interface provides
the standard mechanism for an assistive technology to determine the
key bindings which exist for this object.
Any object that has such key bindings should support this
interface. Applications can determine if an object supports the
AccessibleKeyBinding interface by first obtaining its AccessibleContext
(see @link Accessible} and then calling the
AccessibleContext#getAccessibleKeyBinding method. If the return
value is not null, the object supports this interface.