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.
WindowEvent, WindowListener, Tutorial: Writing a Window Listener
public WindowAdapter()
public void windowOpened(WindowEvent e)
Invoked when a window has been opened.
windowOpened in interface WindowListener
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.
windowClosing in interface WindowListener
public void windowClosed(WindowEvent e)
Invoked when a window has been closed.
windowClosed in interface WindowListener
public void windowIconified(WindowEvent e)
Invoked when a window is iconified.
windowIconified in interface WindowListener
Frame.setIconImage(java.awt.Image)public void windowDeiconified(WindowEvent e)
Invoked when a window is de-iconified.
windowDeiconified in interface WindowListener
public void windowActivated(WindowEvent e)
Invoked when a window is activated.
windowActivated in interface WindowListener
public void windowDeactivated(WindowEvent e)
Invoked when a window is de-activated.
windowDeactivated in interface WindowListener
public void windowStateChanged(WindowEvent e)
Invoked when a window state is changed.
windowStateChanged in interface WindowStateListener
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.
windowGainedFocus in interface WindowFocusListener
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.
windowLostFocus in interface WindowFocusListener
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