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FocusListener.javaAPI DocJava SE 6 API1403Tue Jun 10 00:25:24 BST 2008java.awt.event

FocusListener

public interface FocusListener implements 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.
see
FocusAdapter
see
FocusEvent
see
Tutorial: Writing a Focus Listener
author
Carl Quinn
version
1.17 04/13/06
since
1.1

Fields Summary
Constructors Summary
Methods Summary
public voidfocusGained(java.awt.event.FocusEvent e)
Invoked when a component gains the keyboard focus.

public voidfocusLost(java.awt.event.FocusEvent e)
Invoked when a component loses the keyboard focus.