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Window

Window dient hauptsächlich als Methodenlieferant für Frame und Dialog. Ein Window-Objekt ist lediglich eine rechteckige Fläche auf dem Bildschirm, ohne Rand und nicht verschiebbar. Ein Window ist zwar ein top-level-Container, aber es braucht, siehe Konstruktoren, ein Frame oder ein Window, aus dem heraus es erzeugt wird.

Konstruktoren
Window(Frame owner)	Constructs a new invisible window with the specified Frame as its owner.
Window(Window owner)	Constructs a new invisible window with the specified Window as its owner.

Wichtige Methoden
Returntyp	Name der Methode
Eventhandling
void	addWindowListener(WindowListener l) Adds the specified WindowListener to receive WindowEvents from this frame.
void	removeWindowListener(WindowListener l) Removes the specified WindowListener so that it no longer receives WindowEvents from this frame.
void	addWindowFocusListener(WindowFocusListener l) Adds the specified window focus listener to receive window events from this window.
void	removeWindowFocusListener(WindowFocusListener l) Removes the specified window focus listener so that it no longer receives window events from this window.
void	addWindowStateListener(WindowStateListener l) Adds the specified window state listener to receive window events from this window
void	removeWindowStateListener(WindowStateListener l) Removes the specified window state listener so that it no longer receives window events from this window.
WindowFocusListener[]	getWindowFocusListeners() Returns an array of all the window focus listeners registered on this window.
WindowListener[]	getWindowListeners() Returns an array of all the window listeners registered on this window.
WindowStateListener[]	getWindowStateListeners() Returns an array of all the window state listeners registered on this window.
Fokushandling
boolean	getFocusableWindowState() Returns whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
Component	getFocusabgetFocusOwner() Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
Component	getMostRecentFocusOwner() Returns the child Component of this Window that will receive the focus when this Window is focused.
boolean	isFocusableWindow() Returns whether this Window can become the focused Window, that is, whether this Window or any of its subcomponents can become the focus owner.
boolean	isFocused() Returns whether this Window is focused.
void	setFocusableWindowState(boolean focusableWindowState) Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow.
Zustand
void	hide() Hide this Window, its subcomponents, and all of its owned children.
void	show() Makes the Window visible.
void	toBack() If this Window is visible, sends this Window to the back and may cause it to lose focus or activation if it is the focused or active Window.
void	toFront() If this Window is visible, brings this Window to the front and may make it the focused Window.
void	pack() Causes this Window to be sized to fit the preferred size and layouts of its subcomponents.
void	dispose() Releases all of the native screen resources used by this Window, its subcomponents, and all of its owned children.

Layout

Das Defaultlayout für Window ist BorderLayout (siehe das Kapitel Layout);

Eventhandling

Wie man die Methoden zum Thema Eventhandling einsetzt, findet sich in einem eigenen Kapitel über Eventhandling.

Fokushandling

Die Version 1.4 hat die Klasse Window um eine ganze Reihe von neuen Methoden bereichert, u.a. wurde die ganze Fokusbehandlung neu strukturiert. Eine Auflistung der neu hinzugekommenen Methoden findet sich unter

New 1.4 methods in Component and its subclasses (Summary).

Auf das neue Fokusmanagement wird eingegangen in

Neues 1.4 FokusManagement.