JAVA programming notes

JAVA PROGRAMMING NOTES
PART 3
Syllabus:

• Introduction to AWT:

• working with frames, graphics, color, font. ▪ AWT Control fundamentals.

• Swing overview.

• Java database connectivity:

• JDBC overview

• creating and executing queries ▪ dynamic queries.

Abstract Window Toolkit-AWT

 The AWT contains numerous classes and methods that allow us to create and manage windows.

 AWT Classes :

 The AWT classes are contained in the java.awt package.

Some AWT 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 check box 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 a bitmapped cursor.
Dialog Creates a dialog window.
Dimension Specifies the dimensions 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 a 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 or printer.
GraphicsEnvironment Describes the collection of available Font and GraphicsDevice objects.


Some AWT Classes(Cond..)

Class Description
GridBagConstraints Defines various constraints relating to the GridBagLayout class.
GridBagLayout The grid bag layout manager. Grid bag layout displays components subject to the constraints specified by
GridBagConstraints.


GridLayout The grid layout manager. Grid layout displays components in a two-dimensional grid.


Image Encapsulates graphical images.
Insets Encapsulates the 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 coordinate 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.
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.