# Uses of Interface
java.awt.image.ImageObserver

Packages that use ImageObserver
Package
Description
java.awt
Contains all of the classes for creating user interfaces and for painting graphics and images.
java.awt.image
Provides classes for creating and modifying images.
javax.swing
Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.
javax.swing.colorchooser
Contains classes and interfaces used by the `JColorChooser` component.
javax.swing.plaf.basic
Provides user interface objects built according to the Basic look and feel.
javax.swing.plaf.metal
Provides user interface objects built according to the Java look and feel (once codenamed Metal), which is the default look and feel.
javax.swing.table
Provides classes and interfaces for dealing with `javax.swing.JTable`.
javax.swing.text
Provides classes and interfaces that deal with editable and noneditable text components.
javax.swing.tree
Provides classes and interfaces for dealing with `javax.swing.JTree`.

- ## Uses of ImageObserver in java.awt

  Classes in java.awt that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `Button`
  This class creates a labeled button.
  `class`
  `Canvas`
  A `Canvas` component represents a blank rectangular area of the screen onto which the application can draw or from which the application can trap input events from the user.
  `class`
  `Checkbox`
  A check box is a graphical component that can be in either an "on" (`true`) or "off" (`false`) state.
  `class`
  `Choice`
  The `Choice` class presents a pop-up menu of choices.
  `class`
  `Component`
  A component is an object having a graphical representation that can be displayed on the screen and that can interact with the user.
  `class`
  `Container`
  A generic Abstract Window Toolkit(AWT) container object is a component that can contain other AWT components.
  `class`
  `Dialog`
  A Dialog is a top-level window with a title and a border that is typically used to take some form of input from the user.
  `class`
  `FileDialog`
  The `FileDialog` class displays a dialog window from which the user can select a file.
  `class`
  `Frame`
  A `Frame` is a top-level window with a title and a border.
  `class`
  `Label`
  A `Label` object is a component for placing text in a container.
  `class`
  `List`
  The `List` component presents the user with a scrolling list of text items.
  `class`
  `Panel`
  `Panel` is the simplest container class.
  `class`
  `Scrollbar`
  The `Scrollbar` class embodies a scroll bar, a familiar user-interface object.
  `class`
  `ScrollPane`
  A container class which implements automatic horizontal and/or vertical scrolling for a single child component.
  `class`
  `TextArea`
  A `TextArea` object is a multi-line region that displays text.
  `class`
  `TextComponent`
  The `TextComponent` class is the superclass of any component that allows the editing of some text.
  `class`
  `TextField`
  A `TextField` object is a text component that allows for the editing of a single line of text.
  `class`
  `Window`
  A `Window` object is a top-level window with no borders and no menubar.
  Methods in java.awt with parameters of type ImageObserver
  Modifier and Type
  Method
  Description
  `int`
  Component.`checkImage(Image image, int width, int height, ImageObserver observer)`
  Returns the status of the construction of a screen representation of the specified image.
  `int`
  Component.`checkImage(Image image, ImageObserver observer)`
  Returns the status of the construction of a screen representation of the specified image.
  `abstract int`
  Toolkit.`checkImage(Image image, int width, int height, ImageObserver observer)`
  Indicates the construction status of a specified image that is being prepared for display.
  `abstract boolean`
  Graphics.`drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer)`
  Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.
  `abstract boolean`
  Graphics.`drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer)`
  Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.
  `abstract boolean`
  Graphics.`drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)`
  Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
  `abstract boolean`
  Graphics.`drawImage(Image img, int x, int y, int width, int height, ImageObserver observer)`
  Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
  `abstract boolean`
  Graphics.`drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)`
  Draws as much of the specified image as is currently available.
  `abstract boolean`
  Graphics.`drawImage(Image img, int x, int y, ImageObserver observer)`
  Draws as much of the specified image as is currently available.
  `abstract boolean`
  Graphics2D.`drawImage(Image img, AffineTransform xform, ImageObserver obs)`
  Renders an image, applying a transform from image space into user space before drawing.
  `abstract int`
  Image.`getHeight(ImageObserver observer)`
  Determines the height of the image.
  `abstract Object`
  Image.`getProperty(String name, ImageObserver observer)`
  Gets a property of this image by name.
  `abstract int`
  Image.`getWidth(ImageObserver observer)`
  Determines the width of the image.
  `boolean`
  Component.`prepareImage(Image image, int width, int height, ImageObserver observer)`
  Prepares an image for rendering on this component at the specified width and height.
  `boolean`
  Component.`prepareImage(Image image, ImageObserver observer)`
  Prepares an image for rendering on this component.
  `abstract boolean`
  Toolkit.`prepareImage(Image image, int width, int height, ImageObserver observer)`
  Prepares an image for rendering.

- ## Uses of ImageObserver in java.awt.image

  Methods in java.awt.image with parameters of type ImageObserver
  Modifier and Type
  Method
  Description
  `int`
  AbstractMultiResolutionImage.`getHeight(ImageObserver observer)`
  This method simply delegates to the same method on the base image and it is equivalent to: `getBaseImage().getHeight(observer)`.
  `int`
  BufferedImage.`getHeight(ImageObserver observer)`
  Returns the height of the `BufferedImage`.
  `Object`
  AbstractMultiResolutionImage.`getProperty(String name, ImageObserver observer)`
  This method simply delegates to the same method on the base image and it is equivalent to: `getBaseImage().getProperty(name, observer)`.
  `Object`
  BufferedImage.`getProperty(String name, ImageObserver observer)`
  Returns a property of the image by name.
  `int`
  AbstractMultiResolutionImage.`getWidth(ImageObserver observer)`
  This method simply delegates to the same method on the base image and it is equivalent to: `getBaseImage().getWidth(observer)`.
  `int`
  BufferedImage.`getWidth(ImageObserver observer)`
  Returns the width of the `BufferedImage`.

- ## Uses of ImageObserver in javax.swing

  Classes in javax.swing that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `AbstractButton`
  Defines common behaviors for buttons and menu items.
  `class`
  `Box`
  A lightweight container that uses a BoxLayout object as its layout manager.
  `static class`
  `Box.Filler`
  An implementation of a lightweight component that participates in layout but has no view.
  `class`
  `CellRendererPane`
  This class is inserted in between cell renderers and the components that use them.
  `class`
  `DefaultListCellRenderer`
  Renders an item in a list.
  `static class`
  `DefaultListCellRenderer.UIResource`
  A subclass of DefaultListCellRenderer that implements UIResource.
  `class`
  `JButton`
  An implementation of a "push" button.
  `class`
  `JCheckBox`
  An implementation of a check box -- an item that can be selected or deselected, and which displays its state to the user.
  `class`
  `JCheckBoxMenuItem`
  A menu item that can be selected or deselected.
  `class`
  `JColorChooser`
  `JColorChooser` provides a pane of controls designed to allow a user to manipulate and select a color.
  `class`
  `JComboBox<E>`
  A component that combines a button or editable field and a drop-down list.
  `class`
  `JComponent`
  The base class for all Swing components except top-level containers.
  `class`
  `JDesktopPane`
  A container used to create a multiple-document interface or a virtual desktop.
  `class`
  `JDialog`
  The main class for creating a dialog window.
  `class`
  `JEditorPane`
  A text component to edit various kinds of content.
  `class`
  `JFileChooser`
  `JFileChooser` provides a simple mechanism for the user to choose a file.
  `class`
  `JFormattedTextField`
  `JFormattedTextField` extends `JTextField` adding support for formatting arbitrary values, as well as retrieving a particular object once the user has edited the text.
  `class`
  `JFrame`
  An extended version of `java.awt.Frame` that adds support for the JFC/Swing component architecture.
  `class`
  `JInternalFrame`
  A lightweight object that provides many of the features of a native frame, including dragging, closing, becoming an icon, resizing, title display, and support for a menu bar.
  `static class`
  `JInternalFrame.JDesktopIcon`
  This component represents an iconified version of a `JInternalFrame`.
  `class`
  `JLabel`
  A display area for a short text string or an image, or both.
  `final class`
  `JLayer<V extends Component>`
  `JLayer` is a universal decorator for Swing components which enables you to implement various advanced painting effects as well as receive notifications of all `AWTEvent`s generated within its borders.
  `class`
  `JLayeredPane`
  `JLayeredPane` adds depth to a JFC/Swing container, allowing components to overlap each other when needed.
  `class`
  `JList<E>`
  A component that displays a list of objects and allows the user to select one or more items.
  `class`
  `JMenu`
  An implementation of a menu -- a popup window containing `JMenuItem`s that is displayed when the user selects an item on the `JMenuBar`.
  `class`
  `JMenuBar`
  An implementation of a menu bar.
  `class`
  `JMenuItem`
  An implementation of an item in a menu.
  `class`
  `JOptionPane`
  `JOptionPane` makes it easy to pop up a standard dialog box that prompts users for a value or informs them of something.
  `class`
  `JPanel`
  `JPanel` is a generic lightweight container.
  `class`
  `JPasswordField`
  `JPasswordField` is a lightweight component that allows the editing of a single line of text where the view indicates something was typed, but does not show the original characters.
  `class`
  `JPopupMenu`
  An implementation of a popup menu -- a small window that pops up and displays a series of choices.
  `static class`
  `JPopupMenu.Separator`
  A popup menu-specific separator.
  `class`
  `JProgressBar`
  A component that visually displays the progress of some task.
  `class`
  `JRadioButton`
  An implementation of a radio button -- an item that can be selected or deselected, and which displays its state to the user.
  `class`
  `JRadioButtonMenuItem`
  An implementation of a radio button menu item.
  `class`
  `JRootPane`
  A lightweight container used behind the scenes by `JFrame`, `JDialog`, `JWindow`, and `JInternalFrame`.
  `class`
  `JScrollBar`
  An implementation of a scrollbar.
  `class`
  `JScrollPane`
  Provides a scrollable view of a lightweight component.
  `protected class`
  `JScrollPane.ScrollBar`
  By default `JScrollPane` creates scrollbars that are instances of this class.
  `class`
  `JSeparator`
  `JSeparator` provides a general purpose component for implementing divider lines - most commonly used as a divider between menu items that breaks them up into logical groupings.
  `class`
  `JSlider`
  A component that lets the user graphically select a value by sliding a knob within a bounded interval.
  `class`
  `JSpinner`
  A single line input field that lets the user select a number or an object value from an ordered sequence.
  `static class`
  `JSpinner.DateEditor`
  An editor for a `JSpinner` whose model is a `SpinnerDateModel`.
  `static class`
  `JSpinner.DefaultEditor`
  A simple base class for more specialized editors that displays a read-only view of the model's current value with a `JFormattedTextField`.
  `static class`
  `JSpinner.ListEditor`
  An editor for a `JSpinner` whose model is a `SpinnerListModel`.
  `static class`
  `JSpinner.NumberEditor`
  An editor for a `JSpinner` whose model is a `SpinnerNumberModel`.
  `class`
  `JSplitPane`
  `JSplitPane` is used to divide two (and only two) `Component`s.
  `class`
  `JTabbedPane`
  A component that lets the user switch between a group of components by clicking on a tab with a given title and/or icon.
  `class`
  `JTable`
  The `JTable` is used to display and edit regular two-dimensional tables of cells.
  `class`
  `JTextArea`
  A `JTextArea` is a multi-line area that displays plain text.
  `class`
  `JTextField`
  `JTextField` is a lightweight component that allows the editing of a single line of text.
  `class`
  `JTextPane`
  A text component that can be marked up with attributes that are represented graphically.
  `class`
  `JToggleButton`
  An implementation of a two-state button.
  `class`
  `JToolBar`
  `JToolBar` provides a component that is useful for displaying commonly used `Action`s or controls.
  `static class`
  `JToolBar.Separator`
  A toolbar-specific separator.
  `class`
  `JToolTip`
  Used to display a "Tip" for a Component.
  `class`
  `JTree`
  A control that displays a set of hierarchical data as an outline.
  `class`
  `JViewport`
  The "viewport" or "porthole" through which you see the underlying information.
  `class`
  `JWindow`
  A `JWindow` is a container that can be displayed anywhere on the user's desktop.
  Methods in javax.swing that return ImageObserver
  Modifier and Type
  Method
  Description
  `ImageObserver`
  ImageIcon.`getImageObserver()`
  Returns the image observer for the image.
  Methods in javax.swing with parameters of type ImageObserver
  Modifier and Type
  Method
  Description
  `boolean`
  DebugGraphics.`drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `boolean`
  DebugGraphics.`drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `boolean`
  DebugGraphics.`drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `boolean`
  DebugGraphics.`drawImage(Image img, int x, int y, int width, int height, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `boolean`
  DebugGraphics.`drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `boolean`
  DebugGraphics.`drawImage(Image img, int x, int y, ImageObserver observer)`
  Overrides `Graphics.drawImage`.
  `void`
  ImageIcon.`setImageObserver(ImageObserver observer)`
  Sets the image observer for the image.

- ## Uses of ImageObserver in javax.swing.colorchooser

  Classes in javax.swing.colorchooser that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `AbstractColorChooserPanel`
  This is the abstract superclass for color choosers.

- ## Uses of ImageObserver in javax.swing.plaf.basic

  Classes in javax.swing.plaf.basic that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `BasicArrowButton`
  JButton object that draws a scaled Arrow in one of the cardinal directions.
  `class`
  `BasicComboBoxRenderer`
  ComboBox renderer
  `static class`
  `BasicComboBoxRenderer.UIResource`
  A subclass of BasicComboBoxRenderer that implements UIResource.
  `class`
  `BasicComboPopup`
  This is a basic implementation of the `ComboPopup` interface.
  `class`
  `BasicInternalFrameTitlePane`
  The class that manages a basic title bar
  `class`
  `BasicInternalFrameTitlePane.SystemMenuBar`
  This class should be treated as a "protected" inner class.
  `class`
  `BasicSplitPaneDivider`
  Divider used by BasicSplitPaneUI.
  `protected class`
  `BasicToolBarUI.DragWindow`
  The window which appears during dragging the `JToolBar`.

- ## Uses of ImageObserver in javax.swing.plaf.metal

  Classes in javax.swing.plaf.metal that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `MetalComboBoxButton`
  JButton subclass to help out MetalComboBoxUI
  `class`
  `MetalComboBoxUI.MetalComboPopup`
  Deprecated.
  As of Java 2 platform v1.4.
  `protected class`
  `MetalFileChooserUI.FileRenderer`
  Deprecated.
  As of JDK version 9.
  `class`
  `MetalFileChooserUI.FilterComboBoxRenderer`
  Render different type sizes and styles.
  `class`
  `MetalInternalFrameTitlePane`
  Class that manages a JLF title bar
  `class`
  `MetalScrollButton`
  JButton object for Metal scrollbar arrows.

- ## Uses of ImageObserver in javax.swing.table

  Classes in javax.swing.table that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `DefaultTableCellRenderer`
  The standard class for rendering (displaying) individual cells in a `JTable`.
  `static class`
  `DefaultTableCellRenderer.UIResource`
  A subclass of `DefaultTableCellRenderer` that implements `UIResource`.
  `class`
  `JTableHeader`
  This is the object which manages the header of the `JTable`.

- ## Uses of ImageObserver in javax.swing.text

  Classes in javax.swing.text that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `JTextComponent`
  `JTextComponent` is the base class for swing text components.

- ## Uses of ImageObserver in javax.swing.tree

  Classes in javax.swing.tree that implement ImageObserver
  Modifier and Type
  Class
  Description
  `class`
  `DefaultTreeCellEditor.DefaultTextField`
  `TextField` used when no editor is supplied.
  `class`
  `DefaultTreeCellEditor.EditorContainer`
  Container responsible for placing the `editingComponent`.
  `class`
  `DefaultTreeCellRenderer`
  Displays an entry in a tree.