Package Summary Overview Summary

### class:JWindow [NONE]
- All Implemented Interfaces: ImageObserver, MenuContainer, Serializable, Accessible, RootPaneContainer
      public class JWindow
      extends Window
      implements Accessible, RootPaneContainer
  A `JWindow` is a container that can be displayed anywhere on the user's desktop. It does not have the title bar, window-management buttons, or other trimmings associated with a `JFrame`, but it is still a "first-class citizen" of the user's desktop, and can exist anywhere on it. The `JWindow` component contains a `JRootPane` as its only child. The `contentPane` should be the parent of any children of the `JWindow`. As a convenience, the `add`, `remove`, and `setLayout` methods of this class are overridden, so that they delegate calls to the corresponding methods of the `ContentPane`. For example, you can add a child component to a window as follows:
             window.add(child);
And the child will be added to the contentPane. The `contentPane` will always be non-`null`. Attempting to set it to `null` will cause the `JWindow` to throw an exception. The default `contentPane` will have a `BorderLayout` manager set on it. Refer to `RootPaneContainer` for details on adding, removing and setting the `LayoutManager` of a `JWindow`. Please see the `JRootPane` documentation for a complete description of the `contentPane`, `glassPane`, and `layeredPane` components. In a multi-screen environment, you can create a `JWindow` on a different screen device. See `Window` for more information. Warning: Swing is not thread safe. For more information see Swing's Threading Policy . Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the `java.beans` package. Please see `XMLEncoder`. Since: 1.2 See Also: `JRootPane`

### field:rootPane [NONE]
- #### rootPane
      protected JRootPane rootPane
The `JRootPane` instance that manages the `contentPane` and optional `menuBar` for this frame, as well as the `glassPane`. See Also: `getRootPane()`, `setRootPane(javax.swing.JRootPane)`

### field:rootPaneCheckingEnabled [NONE]
- #### rootPaneCheckingEnabled
      protected boolean rootPaneCheckingEnabled
If true then calls to `add` and `setLayout` will be forwarded to the `contentPane`. This is initially false, but is set to true when the `JWindow` is constructed. See Also: `isRootPaneCheckingEnabled()`, `setRootPaneCheckingEnabled(boolean)`, `RootPaneContainer`

### field:accessibleContext [NONE]
- #### accessibleContext
      protected AccessibleContext accessibleContext
The accessible context property.

### constructor:JWindow() [NONE]
- #### JWindow
      public JWindow()
Creates a window with no specified owner. This window will not be focusable. This constructor sets the component's locale property to the value returned by `JComponent.getDefaultLocale`. Throws: `HeadlessException` - if `GraphicsEnvironment.isHeadless()` returns true. See Also: `GraphicsEnvironment.isHeadless()`, `Window.isFocusableWindow()`, `JComponent.getDefaultLocale()`

### constructor:JWindow(java.awt.GraphicsConfiguration) [NONE]
- #### JWindow
      public JWindow(GraphicsConfiguration gc)
Creates a window with the specified `GraphicsConfiguration` of a screen device. This window will not be focusable. This constructor sets the component's locale property to the value returned by `JComponent.getDefaultLocale`. Parameters: `gc` - the `GraphicsConfiguration` that is used to construct the new window with; if gc is `null`, the system default `GraphicsConfiguration` is assumed Throws: `HeadlessException` - If `GraphicsEnvironment.isHeadless()` returns true. `IllegalArgumentException` - if `gc` is not from a screen device. Since: 1.3 See Also: `GraphicsEnvironment.isHeadless()`, `Window.isFocusableWindow()`, `JComponent.getDefaultLocale()`

### constructor:JWindow(java.awt.Frame) [NONE]
- #### JWindow
      public JWindow(Frame owner)
Creates a window with the specified owner frame. If `owner` is `null`, the shared owner will be used and this window will not be focusable. Also, this window will not be focusable unless its owner is showing on the screen. This constructor sets the component's locale property to the value returned by `JComponent.getDefaultLocale`. Parameters: `owner` - the frame from which the window is displayed Throws: `HeadlessException` - if GraphicsEnvironment.isHeadless() returns true. See Also: `GraphicsEnvironment.isHeadless()`, `Window.isFocusableWindow()`, `JComponent.getDefaultLocale()`

### constructor:JWindow(java.awt.Window) [NONE]
- #### JWindow
      public JWindow(Window owner)
Creates a window with the specified owner window. This window will not be focusable unless its owner is showing on the screen. If `owner` is `null`, the shared owner will be used and this window will not be focusable. This constructor sets the component's locale property to the value returned by `JComponent.getDefaultLocale`. Parameters: `owner` - the window from which the window is displayed Throws: `HeadlessException` - if `GraphicsEnvironment.isHeadless()` returns true. See Also: `GraphicsEnvironment.isHeadless()`, `Window.isFocusableWindow()`, `JComponent.getDefaultLocale()`

### constructor:JWindow(java.awt.Window, java.awt.GraphicsConfiguration) [NONE]
- #### JWindow
      public JWindow(Window owner,
                     GraphicsConfiguration gc)
Creates a window with the specified owner window and `GraphicsConfiguration` of a screen device. If `owner` is `null`, the shared owner will be used and this window will not be focusable. This constructor sets the component's locale property to the value returned by `JComponent.getDefaultLocale`. Parameters: `owner` - the window from which the window is displayed `gc` - the `GraphicsConfiguration` that is used to construct the new window with; if gc is `null`, the system default `GraphicsConfiguration` is assumed, unless `owner` is also null, in which case the `GraphicsConfiguration` from the shared owner frame will be used. Throws: `HeadlessException` - if `GraphicsEnvironment.isHeadless()` returns true. `IllegalArgumentException` - if `gc` is not from a screen device. Since: 1.3 See Also: `GraphicsEnvironment.isHeadless()`, `Window.isFocusableWindow()`, `JComponent.getDefaultLocale()`

### method:windowInit() [NONE]
- #### windowInit
      protected void windowInit()
Called by the constructors to init the `JWindow` properly.

### method:createRootPane() [NONE]
- #### createRootPane
      protected JRootPane createRootPane()
Called by the constructor methods to create the default `rootPane`. Returns: a new `JRootPane`

### method:isRootPaneCheckingEnabled() [NONE]
- #### isRootPaneCheckingEnabled
      protected boolean isRootPaneCheckingEnabled()
Returns whether calls to `add` and `setLayout` are forwarded to the `contentPane`. Returns: true if `add` and `setLayout` are forwarded; false otherwise See Also: `addImpl(java.awt.Component, java.lang.Object, int)` , `setLayout(java.awt.LayoutManager)`, `setRootPaneCheckingEnabled(boolean)`, `RootPaneContainer`

### method:setTransferHandler(javax.swing.TransferHandler) [NONE]
- #### setTransferHandler
      public void setTransferHandler(TransferHandler newHandler)
Sets the `transferHandler` property, which is a mechanism to support transfer of data into this component. Use `null` if the component does not support data transfer operations. If the system property `suppressSwingDropSupport` is `false` (the default) and the current drop target on this component is either `null` or not a user-set drop target, this method will change the drop target as follows: If `newHandler` is `null` it will clear the drop target. If not `null` it will install a new `DropTarget`. Note: When used with `JWindow`, `TransferHandler` only provides data import capability, as the data export related methods are currently typed to `JComponent`. Please see How to Use Drag and Drop and Data Transfer , a section in The Java Tutorial , for more information. Parameters: `newHandler` - the new `TransferHandler` Since: 1.6 See Also: `TransferHandler`, `getTransferHandler()`, `Component.setDropTarget(java.awt.dnd.DropTarget)`

### method:getTransferHandler() [NONE]
- #### getTransferHandler
      public TransferHandler getTransferHandler()
Gets the `transferHandler` property. Returns: the value of the `transferHandler` property Since: 1.6 See Also: `TransferHandler`, `setTransferHandler(javax.swing.TransferHandler)`

### method:update(java.awt.Graphics) [NONE]
- #### update
      public void update(Graphics g)
Calls `paint(g)`. This method was overridden to prevent an unnecessary call to clear the background. Overrides: `update` in class `Container` Parameters: `g` - the `Graphics` context in which to paint See Also: `Component.update(Graphics)`

### method:setRootPaneCheckingEnabled(boolean) [NONE]
- #### setRootPaneCheckingEnabled
      protected void setRootPaneCheckingEnabled(boolean enabled)
Sets whether calls to `add` and `setLayout` are forwarded to the `contentPane`. Parameters: `enabled` - true if `add` and `setLayout` are forwarded, false if they should operate directly on the `JWindow`. See Also: `addImpl(java.awt.Component, java.lang.Object, int)` , `setLayout(java.awt.LayoutManager)`, `isRootPaneCheckingEnabled()`, `RootPaneContainer`

### method:addImpl(java.awt.Component, java.lang.Object, int) [NONE]
- #### addImpl
      protected void addImpl(Component comp,
                             Object constraints,
                             int index)
Adds the specified child `Component`. This method is overridden to conditionally forward calls to the `contentPane`. By default, children are added to the `contentPane` instead of the frame, refer to `RootPaneContainer` for details. Overrides: `addImpl` in class `Container` Parameters: `comp` - the component to be enhanced `constraints` - the constraints to be respected `index` - the index Throws: `IllegalArgumentException` - if `index` is invalid `IllegalArgumentException` - if adding the container's parent to itself `IllegalArgumentException` - if adding a window to a container See Also: `setRootPaneCheckingEnabled(boolean)`, `RootPaneContainer`

### method:remove(java.awt.Component) [NONE]
- #### remove
      public void remove(Component comp)
Removes the specified component from the container. If `comp` is not the `rootPane`, this will forward the call to the `contentPane`. This will do nothing if `comp` is not a child of the `JWindow` or `contentPane`. Overrides: `remove` in class `Container` Parameters: `comp` - the component to be removed Throws: `NullPointerException` - if `comp` is null See Also: `Container.add(java.awt.Component)`, `RootPaneContainer`

### method:setLayout(java.awt.LayoutManager) [NONE]
- #### setLayout
      public void setLayout(LayoutManager manager)
Sets the `LayoutManager`. Overridden to conditionally forward the call to the `contentPane`. Refer to `RootPaneContainer` for more information. Overrides: `setLayout` in class `Container` Parameters: `manager` - the `LayoutManager` See Also: `setRootPaneCheckingEnabled(boolean)`, `RootPaneContainer`

### method:getRootPane() [NONE]
- #### getRootPane
      public JRootPane getRootPane()
Returns the `rootPane` object for this window. Specified by: `getRootPane` in interface `RootPaneContainer` Returns: the `rootPane` property for this window See Also: `setRootPane(javax.swing.JRootPane)`, `RootPaneContainer.getRootPane()`

### method:setRootPane(javax.swing.JRootPane) [NONE]
- #### setRootPane
      protected void setRootPane(JRootPane root)
Sets the new `rootPane` object for this window. This method is called by the constructor. Parameters: `root` - the new `rootPane` property See Also: `getRootPane()`

### method:getContentPane() [NONE]
- #### getContentPane
      public Container getContentPane()
Returns the `Container` which is the `contentPane` for this window. Specified by: `getContentPane` in interface `RootPaneContainer` Returns: the `contentPane` property See Also: `setContentPane(java.awt.Container)`, `RootPaneContainer.getContentPane()`

### method:setContentPane(java.awt.Container) [NONE]
- #### setContentPane
      public void setContentPane(Container contentPane)
Sets the `contentPane` property for this window. This method is called by the constructor. Specified by: `setContentPane` in interface `RootPaneContainer` Parameters: `contentPane` - the new `contentPane` Throws: `IllegalComponentStateException` - (a runtime exception) if the content pane parameter is `null` See Also: `getContentPane()`, `RootPaneContainer.setContentPane(java.awt.Container)`

### method:getLayeredPane() [NONE]
- #### getLayeredPane
      public JLayeredPane getLayeredPane()
Returns the `layeredPane` object for this window. Specified by: `getLayeredPane` in interface `RootPaneContainer` Returns: the `layeredPane` property See Also: `setLayeredPane(javax.swing.JLayeredPane)`, `RootPaneContainer.getLayeredPane()`

### method:setLayeredPane(javax.swing.JLayeredPane) [NONE]
- #### setLayeredPane
      public void setLayeredPane(JLayeredPane layeredPane)
Sets the `layeredPane` property. This method is called by the constructor. Specified by: `setLayeredPane` in interface `RootPaneContainer` Parameters: `layeredPane` - the new `layeredPane` object Throws: `IllegalComponentStateException` - (a runtime exception) if the content pane parameter is `null` See Also: `getLayeredPane()`, `RootPaneContainer.setLayeredPane(javax.swing.JLayeredPane)`

### method:getGlassPane() [NONE]
- #### getGlassPane
      public Component getGlassPane()
Returns the `glassPane Component` for this window. Specified by: `getGlassPane` in interface `RootPaneContainer` Returns: the `glassPane` property See Also: `setGlassPane(java.awt.Component)`, `RootPaneContainer.getGlassPane()`

### method:setGlassPane(java.awt.Component) [NONE]
- #### setGlassPane
      public void setGlassPane(Component glassPane)
Sets the `glassPane` property. This method is called by the constructor. Specified by: `setGlassPane` in interface `RootPaneContainer` Parameters: `glassPane` - the `glassPane` object for this window See Also: `getGlassPane()`, `RootPaneContainer.setGlassPane(java.awt.Component)`

### method:getGraphics() [NONE]
- #### getGraphics
      public Graphics getGraphics()
Creates a graphics context for this component. This method will return `null` if this component is currently not displayable. Overrides: `getGraphics` in class `Component` Returns: a graphics context for this component, or `null` if it has none Since: 1.6 See Also: `Component.paint(java.awt.Graphics)`

### method:repaint(long, int, int, int, int) [NONE]
- #### repaint
      public void repaint(long time,
                          int x,
                          int y,
                          int width,
                          int height)
Repaints the specified rectangle of this component within `time` milliseconds. Refer to `RepaintManager` for details on how the repaint is handled. Overrides: `repaint` in class `Component` Parameters: `time` - maximum time in milliseconds before update `x` - the x coordinate `y` - the y coordinate `width` - the width `height` - the height Since: 1.6 See Also: `RepaintManager`

### method:paramString() [NONE]
- #### paramString
      protected String paramString()
Returns a string representation of this `JWindow`. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be `null`. Overrides: `paramString` in class `Container` Returns: a string representation of this `JWindow`

### method:getAccessibleContext() [NONE]
- #### getAccessibleContext
      public AccessibleContext getAccessibleContext()
Gets the AccessibleContext associated with this JWindow. For JWindows, the AccessibleContext takes the form of an AccessibleJWindow. A new AccessibleJWindow instance is created if necessary. Specified by: `getAccessibleContext` in interface `Accessible` Overrides: `getAccessibleContext` in class `Window` Returns: an AccessibleJWindow that serves as the AccessibleContext of this JWindow