*
* @exception ClosedSelectorException If this selector is closed.
*/
- public abstract Set keys();
+ public abstract Set<SelectionKey> keys();
/**
* Returns the SelectorProvider that created the selector.
*
* @exception ClosedSelectorException If this selector is closed.
*/
- public abstract Set selectedKeys();
+ public abstract Set<SelectionKey> selectedKeys();
/**
* Selects a set of keys whose corresponding channels are ready