java.awt.event

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

public interface FocusListener
extends EventListener

This interface is for classes that wish to be notified of changes of keyboard focus for a component. To watch a subset of these events, use a FocusAdapter.

Since:

1.1

See Also:

FocusAdapter, FocusEvent

Method Summary

Methods

Modifier and Type	Method and Description
void	focusGained(FocusEvent event) This method is called when a component gains the keyboard focus.
void	focusLost(FocusEvent event) This method is invoked when a component loses the keyboard focus.

Method Detail

focusGained

void focusGained(FocusEvent event)

This method is called when a component gains the keyboard focus.

Parameters:

event - the FocusEvent indicating that focus was gained

focusLost

void focusLost(FocusEvent event)

This method is invoked when a component loses the keyboard focus.

Parameters:

event - the FocusEvent indicating that focus was lost