Interface FocusListener
- All Superinterfaces:
EventListener
- All Known Implementing Classes:
AWTEventMulticaster
,BasicButtonListener
,BasicComboBoxEditor
,BasicComboBoxEditor.UIResource
,BasicComboBoxUI.FocusHandler
,BasicListUI.FocusHandler
,BasicSliderUI.FocusHandler
,BasicSplitPaneUI.FocusHandler
,BasicTabbedPaneUI.FocusHandler
,BasicTableUI.FocusHandler
,BasicTextUI.BasicCaret
,BasicToolBarUI.ToolBarFocusListener
,BasicTreeUI.FocusHandler
,Component.AccessibleAWTComponent.AccessibleAWTFocusHandler
,DefaultCaret
,FocusAdapter
,JComponent.AccessibleJComponent.AccessibleFocusHandler
,MetalComboBoxEditor
,MetalComboBoxEditor.UIResource
The listener interface for receiving keyboard focus events on
a component.
The class that is interested in processing a focus event
either implements this interface (and all the methods it
contains) or extends the abstract
FocusAdapter
class
(overriding only the methods of interest).
The listener object created from that class is then registered with a
component using the component's addFocusListener
method. When the component gains or loses the keyboard focus,
the relevant method in the listener object
is invoked, and the FocusEvent
is passed to it.- Since:
- 1.1
- See Also:
-
Method Summary
Modifier and TypeMethodDescriptionvoid
Invoked when a component gains the keyboard focus.void
Invoked when a component loses the keyboard focus.
-
Method Details
-
focusGained
Invoked when a component gains the keyboard focus.- Parameters:
e
- the event to be processed
-
focusLost
Invoked when a component loses the keyboard focus.- Parameters:
e
- the event to be processed
-