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

WindowAdapter (Java SE 19 & JDK 19)

All Implemented Interfaces:

WindowFocusListener, WindowListener, WindowStateListener, EventListener

Direct Known Subclasses:

BasicToolBarUI.FrameListener, JMenu.WinListener

An abstract adapter class for receiving window events. The methods in this class are empty. This class exists as convenience for creating listener objects.

Extend this class to create a WindowEvent listener and override the methods for the events of interest. (If you implement the WindowListener 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 Window using the window's addWindowListener method. When the window's status changes by virtue of being opened, closed, activated or deactivated, iconified or deiconified, the relevant method in the listener object is invoked, and the WindowEvent is passed to it.

Since:

1.1

See Also:

• WindowEvent
• WindowListener
• Tutorial: Writing a Window Listener

• Constructor Summary

  Constructors

  protected

  Constructs a WindowAdapter.

• Method Summary

  void

  Invoked when a window is activated.

  void

  Invoked when a window has been closed.

  void

  Invoked when a window is in the process of being closed.

  void

  Invoked when a window is de-activated.

  void

  Invoked when a window is de-iconified.

  void

  Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.

  void

  Invoked when a window is iconified.

  void

  Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.

  void

  Invoked when a window has been opened.

  void

  Invoked when a window state is changed.

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

• Constructor Details
  • WindowAdapter

    protected WindowAdapter()

    Constructs a WindowAdapter.

• Method Details
  • windowOpened

    Invoked when a window has been opened.

    Specified by:

    windowOpened in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowClosing

    Invoked when a window is in the process of being closed. The close operation can be overridden at this point.

    Specified by:

    windowClosing in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowClosed

    Invoked when a window has been closed.

    Specified by:

    windowClosed in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowIconified

    Invoked when a window is iconified.

    Specified by:

    windowIconified in interface WindowListener

    Parameters:

    e - the event to be processed

    See Also:

    • Window.setIconImage(java.awt.Image)

  • windowDeiconified

    Invoked when a window is de-iconified.

    Specified by:

    windowDeiconified in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowActivated

    Invoked when a window is activated.

    Specified by:

    windowActivated in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowDeactivated

    Invoked when a window is de-activated.

    Specified by:

    windowDeactivated in interface WindowListener

    Parameters:

    e - the event to be processed

  • windowStateChanged

    Invoked when a window state is changed.

    Specified by:

    windowStateChanged in interface WindowStateListener

    Parameters:

    e - the event to be processed

    Since:

    1.4

  • windowGainedFocus

    Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.

    Specified by:

    windowGainedFocus in interface WindowFocusListener

    Parameters:

    e - the event to be processed

    Since:

    1.4

  • windowLostFocus

    Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.

    Specified by:

    windowLostFocus in interface WindowFocusListener

    Parameters:

    e - the event to be processed

    Since:

    1.4

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