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Please note that this translation of the specification is the result of a java.net community project ( https://jdk5-api-pt-br.dev.java.net/ ). The official version of the specification is the US English language version which can be found at http://java.sun.com/j2se/1.5.0/docs/api/. In case of disputes, the authoritative version of the specification is the original, English document.

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

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:

FocusAdapter, FocusEvent, Tutorial: Writing a Focus Listener, Reference: The Java Class Libraries (update file)

Method Summary

void	focusGained(FocusEvent e) Invoked when a component gains the keyboard focus.
void	focusLost(FocusEvent e) Invoked when a component loses the keyboard focus.

Method Detail

focusGained

void focusGained(FocusEvent e)

Invoked when a component gains the keyboard focus.

focusLost

void focusLost(FocusEvent e)

Invoked when a component loses the keyboard focus.