EventListener
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
public interface FocusListener extends EventListener
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.Modifier and Type | Method | Description |
---|---|---|
void |
focusGained |
Invoked when a component gains the keyboard focus. |
void |
focusLost |
Invoked when a component loses the keyboard focus. |
void focusGained(FocusEvent e)
e
- the event to be processedvoid focusLost(FocusEvent e)
e
- the event to be processed
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/event/FocusListener.html