Package Summary Overview Summary

### class:JApplet [NONE]
- All Implemented Interfaces: ImageObserver, MenuContainer, Serializable, Accessible, RootPaneContainer
      public class JApplet
      extends Applet
      implements Accessible, RootPaneContainer
  An extended version of `java.applet.Applet` that adds support for the JFC/Swing component architecture. You can find task-oriented documentation about using `JApplet` in The Java Tutorial , in the section How to Make Applets . The `JApplet` class is slightly incompatible with `java.applet.Applet`. `JApplet` contains a `JRootPane` as its only child. The `contentPane` should be the parent of any children of the `JApplet`. 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 an applet as follows:
             applet.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 `JApplet` 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 `JApplet`. Please see the `JRootPane` documentation for a complete description of the `contentPane`, `glassPane`, and `layeredPane` properties. 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: `RootPaneContainer`

### field:rootPane [NONE]
- #### rootPane
      protected JRootPane rootPane
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 `JApplet` is constructed. See Also: `isRootPaneCheckingEnabled()`, `setRootPaneCheckingEnabled(boolean)`, `RootPaneContainer`

### field:accessibleContext [NONE]
- #### accessibleContext
      protected AccessibleContext accessibleContext
`AccessibleContext` associated with this `JApplet`

### constructor:JApplet() [NONE]
- #### JApplet
      public JApplet()
              throws HeadlessException
Creates a swing applet instance. 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()`, `JComponent.getDefaultLocale()`

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

### 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 `JApplet`, `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)
Just calls `paint(g)`. This method was overridden to prevent an unnecessary call to clear the background. Overrides: `update` in class `Container` Parameters: `g` - the specified Graphics window See Also: `Component.update(Graphics)`

### method:setJMenuBar(javax.swing.JMenuBar) [NONE]
- #### setJMenuBar
      public void setJMenuBar(JMenuBar menuBar)
Sets the menubar for this applet. Parameters: `menuBar` - the menubar being placed in the applet See Also: `getJMenuBar()`

### method:getJMenuBar() [NONE]
- #### getJMenuBar
      public JMenuBar getJMenuBar()
Returns the menubar set on this applet. Returns: the menubar set on this applet See Also: `setJMenuBar(javax.swing.JMenuBar)`

### 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: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 `JApplet`. 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 `JFrame` 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 applet. Specified by: `getRootPane` in interface `RootPaneContainer` Returns: this components single JRootPane child. See Also: `setRootPane(javax.swing.JRootPane)`, `RootPaneContainer.getRootPane()`

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

### method:getContentPane() [NONE]
- #### getContentPane
      public Container getContentPane()
Returns the contentPane object for this applet. Specified by: `getContentPane` in interface `RootPaneContainer` Returns: the value of 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. This method is called by the constructor. Specified by: `setContentPane` in interface `RootPaneContainer` Parameters: `contentPane` - the contentPane object for this applet 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 applet. Specified by: `getLayeredPane` in interface `RootPaneContainer` Returns: the value of the layeredPane property. Throws: `IllegalComponentStateException` - (a runtime exception) if the layered pane parameter is null 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 layeredPane object for this applet See Also: `getLayeredPane()`, `RootPaneContainer.setLayeredPane(javax.swing.JLayeredPane)`

### method:getGlassPane() [NONE]
- #### getGlassPane
      public Component getGlassPane()
Returns the glassPane object for this applet. Specified by: `getGlassPane` in interface `RootPaneContainer` Returns: the value of 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 applet 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 JApplet. 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 JApplet.

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