Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/event/FocusAdapter.html below:

FocusAdapter (Java SE 19 & JDK 19)

All Implemented Interfaces:

FocusListener, EventListener

Direct Known Subclasses:

BasicSplitPaneUI.FocusHandler, BasicTabbedPaneUI.FocusHandler

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

• Constructor Summary

  Constructors

  protected

  Constructs a FocusAdapter.

• Method Summary

  void

  Invoked when a component gains the keyboard focus.

  void

  Invoked when a component loses the keyboard focus.

  Methods declared in class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Constructor Details
  • FocusAdapter

    protected FocusAdapter()

    Constructs a FocusAdapter.

• Method Details
  • focusGained

    Invoked when a component gains the keyboard focus.

    Specified by:

    focusGained in interface FocusListener

    Parameters:

    e - the event to be processed

  • focusLost

    Invoked when a component loses the keyboard focus.

    Specified by:

    focusLost in interface FocusListener

    Parameters:

    e - the event to be processed

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4