java.awt.event

Class WindowAdapter

  • All Implemented Interfaces:
    WindowFocusListener, WindowListener, WindowStateListener, EventListener
    Direct Known Subclasses:
    BasicToolBarUI.FrameListener, JMenu.WinListener 

    public abstract class WindowAdapter
extends Object
implements WindowListener, WindowStateListener, WindowFocusListener
    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 Detail

      • WindowAdapter

        public WindowAdapter()

    • Method Detail

      • windowOpened

        public void windowOpened(WindowEvent e)
        Invoked when a window has been opened.

      • windowClosing

        public void windowClosing(WindowEvent e)
        Invoked when a window is in the process of being closed. The close operation can be overridden at this point.

      • windowClosed

        public void windowClosed(WindowEvent e)
        Invoked when a window has been closed.

      • windowDeiconified

        public void windowDeiconified(WindowEvent e)
        Invoked when a window is de-iconified.

      • windowActivated

        public void windowActivated(WindowEvent e)
        Invoked when a window is activated.

      • windowDeactivated

        public void windowDeactivated(WindowEvent e)
        Invoked when a window is de-activated.

      • windowGainedFocus

        public void windowGainedFocus(WindowEvent e)
        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
        Since:
        1.4

      • windowLostFocus

        public void windowLostFocus(WindowEvent e)
        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
        Since:
        1.4