Window

Name

Description

The Window class serves as a top-level display area that exists outside the browser or applet area you may be working in. A window must have a parent Frame.

Class Definition

public class java.awt.Window extends java.awt.Container {
 // Constructors public Window (Frame parent); // Instance Methods public void addNotify();
public synchronized void addWindowListener (WindowListener l); public void dispose();
public Component getFocusOwner(); public Locale getLocale(); public Toolkit getToolkit();
public final String getWarningString();
public boolean isShowing(); public void pack();
public boolean postEvent (Event e);  public synchronized void remove WindowListener (WindowListener l); public void show();
public void toBack();
public void toFront(); //Protected Instance Methods protected void processEvent (AWTEvent e); protected void processWindowEvent (WindowEvent e);
}

Constructors

Window

public Window (Frame parent)

• Parameters
• • parent
  • Frame that is to act as the parent of Window.
• Description
• Constructs a Window object.

Instance Methods

addNotify

public void addNotify()

• Overrides
• Container.addNotify()
• Description
• Creates Window's peer and peers of contained components.

removeWindowListener

public synchronized void removeWindowListener(WindowListener l)

• Parameters
• • l
  • One of this Frame's WindowListeners.
• Description
• Remove an event listener.

addWindowListener

public synchronized void addWindowListener (WindowListener l)

• Parameters
• • l
  • An object that implements the WindowListener interface.
• Description
• Add a listener for windowing events.

dispose

public void dispose()

• Returns
• Releases the resources of the Window.

getFocusOwner

public Component getFocusOwner()

• Returns
• The child component that currently has the input focus.

getLocale

public Locale getLocale()

• Returns
• The locale for this Window.
• Overrides
• Window.getLocale()

getToolkit

public Toolkit getToolkit()

• Returns
• Toolkit of Window.
• Overrides
• Component.getToolkit()

getWarningString

public final String getWarningString()

• Returns
• String that will be displayed on the bottom of insecure Window instances.

isShowing

public boolean isShowing()

• Returns
• true if the Window is showing on the screen, false otherwise.

pack

public void pack()

• Description
• Resizes Window to getPreferredSize() of contained components.

postEvent

public boolean postEvent (Event e)

• Parameters
• • e
  • Event instance to post to window.
• Returns
• If Event is handled, true is returned. Otherwise, false is returned.
• Description
• Tells the Window to deal with Event.

removeWindowListener

public synchronized void removeWindowListener (WindowListener l)

• Parameters
• • l
  • One of this Frame's WindowListeners.
• Description
• Remove an event listener.

show

public void show()

• Description
• Show the Window and validate its components.
• Overrides
• Component.show()

toBack

public void toBack()

• Description
• Puts the Window in the background of the display.

toFront

public void toFront()

• Description
• Brings the Window to the foreground of the display.

Protected Instance Methods

processEvent

protected void processEvent (AWTEvent e)

• Parameters
• • e
  • The event to process.
• Description
• Low level AWTEvents are passed to this method for processing.

processWindowEvent

protected void processWindowEvent (WindowEvent e)

• Parameters
• • e
  • The event to process.
• Description
• Window events are passed to this method for processing. Normally, this method is called by processEvent().

See Also

Component, Container, Dialog, Frame, String, Toolkit