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Class java.awt.event.FocusAdapter
Inherited members: ShowHide
Deprecated: ShowHide
View: ClientSubclassPackageImplementation
java.awt.event

Class FocusAdapter

  • java.lang.Object
    • java.awt.event.FocusAdapter
  • All Implemented Interfaces:
    FocusListener, java.util.EventListener
    public abstract class FocusAdapter extends java.lang.Object implements FocusListener
    An abstract adapter class for receiving keyboard focus events. The methods in this class are empty. This class exists as convenience for creating listener objects.

    Extend this class to create a FocusEvent listener and override the methods for the events of interest. (If you implement the FocusListener interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)

    Create a listener object using the extended class and then register it 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:
    FocusEvent, FocusListener, Tutorial: Writing a Focus Listener
    • Constructors 
      Constructor and Description
      Ordinary member indicator FocusAdapter Reveal DetailHide Detail
      FocusAdapter()
       
      public FocusAdapter()
    • Methods 
      Modifier and Type Method and Description
      Ordinary member indicator focusGained Reveal DetailHide Detail
      void focusGained(FocusEvent e)
      Invoked when a component gains the keyboard focus.
      public void focusGained(FocusEvent e)
      Invoked when a component gains the keyboard focus.
      Specified by:
      focusGained in interface FocusListener
      Ordinary member indicator focusLost Reveal DetailHide Detail
      void focusLost(FocusEvent e)
      Invoked when a component loses the keyboard focus.
      public void focusLost(FocusEvent e)
      Invoked when a component loses the keyboard focus.
      Specified by:
      focusLost in interface FocusListener
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
This document was created by Dulcet from the OpenJDK sources. Copyright © 1993, 2012 Oracle and/or its affiliates. All rights reserved.

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