Packages  This Package  Prev  Next  Index  

§1.42 Class Window

public  class  java.awt.Window
    extends  java.awt.Container  (II-§1.11)
        // Constructors
    public Window(Frame  parent);	§1.42.1

        // Methods
    public void addNotify();	§1.42.2
    public void dispose();	§1.42.3
    public Toolkit getToolkit();	§1.42.4
    public final String getWarningString();	§1.42.5
    public void pack();	§1.42.6
    public void show();	§1.42.7
    public void toBack();	§1.42.8
    public void toFront();	§1.42.9
A Window is a top-level window; it has no borders and no menubar. It could be used, for example, to implement a pop-up menu. The AWT sends the window all mouse, keyboard, and focus events that occur over it.

The default layout for a window is BorderLayout (II-§1.1).



public Window(Frame parent)
Constructs a new invisible window
The window behaves as a modal dialog in that it will block input to other application windows when shown.
Use the show method (II-§1.42.7) to cause the window to become visible.

parent - the main application frame



public void addNotify()
This method calls the createWindow method (II-§1.41.21) of this object's toolkit (II-§1.10.20) in order to create a WindowPeer (II-§3.22) for this window. This peer allows the application to change the look of a window without changing its functionality.

Most applications do not call this method directly.
addNotify in class Container (II-§1.11.4).


public void dispose()
Disposes of this window and any resources used by this window.


public Toolkit getToolkit()
Determines the toolkit of this window.
The implementation of getToolkit in class Window returns the default toolkit (II-§1.41.23). However subclasses of Window can override this method in order to create their own toolkits.

the toolkit of this window. .
getToolkit in class Component (II-§1.10.20).


public final String getWarningString()
Returns the warning string that is displayed with this window. If this window is insecure, the warning string is displayed somewhere in the visible area of the window. A window is insecure if there is a security manager, and its checkTopLevelWindow method (I-§1.15.22) returns false when passed this window as an argument.

If the window is secure, then the getWarningString method returns null. If the window is insecure, this methods checks for a system property awt.appletWarning and returns the string value of that property. If there is no such property, the default warning string is used instead. The default warning string is "Warning: Applet Window".
the warning string for this window.


public void pack()
Causes the subcomponents of this window to be laid out at their preferred size.


public void show()
If this window is not yet visible, make it visible. If this window is already visible, then bring it to the front (II-§1.42.9).

show in class Component (II-§1.10.70).
See Also:
hide in class Component (II-§1.10.23).


public void toBack()
Sends this window to the back.


public void toFront()
Brings this window to the front.

Packages  This Package  Prev  Next  Index
Java API Document (HTML generated by dkramer on April 22, 1996)
Copyright © 1996 Sun Microsystems, Inc. All rights reserved
Please send any comments or corrections to