What are AWT Classes in Java

Tuesday, 13 December 2011


The Abstract Window Toolkit(AWT) contains numerous classes and methods that allow you to create and manage windows. Although the main purpose of the AWT is to support applet windows, it can also be used to create stand-alone windows that run in GUI environment, such as windows.

The AWT classes are contained in the 'java.awt' package. Fortunately, because it is logically organized in a top-down, hierarchical fashion, it is easier to understand and use.

Following are the list of some AWR classes.

Class
Description


AWTEvent
Encapsulates AWT events.
AWTEventMulticaster
Dispatches events to multiple listeners.
BorderLayout
The border layout manager. Border layouts use five components: North, South, East West, and Center.
Button
Creates a push button control.
Canvas
A blank, semantics-free window.
CardLayout
The card layout manager. Card layouts emulate index cards. Only the one on top is showing.
Checkbox
Creates a checkbox control.
CheckboxGroup
Creates a group of check box controls.
CheckboxMenuItem
Creates an on/off menu item.
Choice
Creates a pop-up list.
Color
Manages colors in a portable, platform-independent fashion.
Component
An abstract superclass for various AWT components.
Container
A subclass of Component that can hold other components.
Cursor
Encapsulates events.
Dialog
Creates a dialog window.
Dimension
Specifies the dimentions of an object. The width is stored in width, and the height is stored in height.
Event
Encapsulates events.
EventQueue
Queues events.
FileDialog
Creates a window from which a file can be selected.
FlowLayout
The flow layout manager. Flow layout positions components left to right, top to bottom.
Font
Encapsulates a type font.
FontMetrics
Encapsulates various information related to a font. This information helps you display text in a window.
Frame
Creates a standard window that has t title bar, resize corners, and a menu bar.
Graphics
Encapsulates the graphics context. This context is used by the various output methods to display output in a window.
GraphicsDevice
Describes a graphics device such as a screen printer.
GraphicsEnvironment
Describes the collection of a available Font and GraphicsDevice objects.
GridBagConstraints
Defines various constraints relating to the GridBagLayout class.
GridLayout
The grid layout manager. Grid layout displays components in a two-dimensional grid.
GridBagLayout
The grid bag layout manager. Grid bag layout displays components subject to the constraints specified by GridBagConstraints.
Image
Encapsulates graphical images.
Insets
Encapsulates th borders of a container.
Label
Creates a label that displays a string.
List
Creates a list from which the user can choose. Similar to the standard Windows list box.
MediaTracker
Manages media objects.
Menu
Creates a pull-down menu.
MenuBar
Creates a menu bar.
MenuComponent
An abstract class implemented by various menu classes.
MenuItem
Creates a menu item.
MenuShortcut
Encapsulates a keyboard shortcut for a menu item.
Panel
The simplest concrete subclass of Container.
Point
Encapsulates a Cartesian co-ordinate pair, stored in x and y.
Polygon
Encapsulates a polygon.
PopupMenu
Encapsulates a pop-up menu.
PrintJob
An abstract class that represents a print job.
Rectangle
Encapsulates a rectangle.
Robot
Supports automated testing of AWT-based applications.(Added by Java 2, v1.3)
Scrollbar
Creates a scroll bar control.
ScrollPane
A container that provides horizontal and/or vertical scroll bars for another component.
SystemColor
Contains the colors of GUI widgets such as windows, scroll bars, text, and others.
TextArea
Creates a multiline edit control.
TextComponent
A superclass for TextArea and TextField.
TextField
Creates a single-line edit control.
Toolkit
Abstract class implemented by the AWT.
Window
Creates a window with no frame, no menu bar, and no title.

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