java.awt.event

Interface FocusListener

  • All Superinterfaces:
    java.util.EventListener
    All Known Implementing Classes:
    AWTEventMulticaster, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler, FocusAdapter
    public interface FocusListener extends java.util.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
    • Methods 
      Modifier and Type Method and Description
      Ordinary member indicator focusGained Reveal DetailHide Detail
      Invoked when a component gains the keyboard focus.
      Ordinary member indicator focusLost Reveal DetailHide Detail
      Invoked when a component loses the keyboard focus.
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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