📄 java3.txt
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be connected to a
PipedOutputStream to be useful
PipedOutputStream A piped output stream, which
should be connected to a
PipedInputStream to be useful
(together they provide safe
communication between threads)
PrintStream An output stream for printing
(used by System.out.println(...))
PushbackInputStream An input stream with a 1-byte
push-back buffer
RandomAccessFile Provides random access to a file,
constructed from filenames,
descriptors, or objects
SequenceInputStream Converts a sequence of input
streams into a single input steam
StreamTokenizer Converts an input stream into a
sequence of individual tokens
StringBufferInputStream An input stream from a String
object
java.net
The java.net package contains classes and interfaces for
performing network operations, such as sockets and URLs.
Interfaces
ContentHandlerFactory Methods for creating
ContentHandler objects
SocketImplFactory Methods for creating socket
implementations (instance of the
SocketImpl class)
URLStreamHandlerFactory Methods for creating
URLStreamHandler objects
Classes
ContentHandler Abstract behavior for reading data from a
URL connection and constructing the
appropriate local object, based on MIME
types
DatagramPacket A datagram packet (UDP)
DatagramSocket A datagram socket
InetAddress An object representation of an Internet
host (host name, IP address)
ServerSocket A server-side socket
Socket A socket
SocketImpl An abstract class for specific socket
implementations
URL An object representation of a URL
URLConnection Abstract behavior for a socket that can
handle various Web-based protocols (http,
ftp, and so on)
URLEncoder Turns strings into x-www-form-urlencoded
format
URLStreamHandler Abstract class for managing streams to
object referenced by URLs
java.awt
The java.awt package contains the classes and interfaces that
make up the Abstract Windowing Toolkit (awt).
Interfaces
LayoutManager Methods for laying out containers
MenuContainer Methods for menu-related containers
Classes
BorderLayout A layout manager for arranging items in
border formation
Button A UI pushbutton
Canvas A canvas for drawing and performing
other graphics operations
CardLayout A layout manager for HyperCard-like
metaphors
Checkbox A check box
CheckboxGroup A group of exclusive check boxes (radio
buttons)
CheckboxMenuItem A toggle menu item
Choice A pop-up menu of choices
Color An abstract representation of a color
Component The abstract generic class for all UI
components
Container Abstract behavior for a component that
can hold other components or containers
Dialog A window for brief interactions with
users
Dimension An object representing width and height
Event An object representing events caused by
the system or based on user input
FileDialog A dialog for getting filenames from the
local file system
FlowLayout A layout manager that lays out objects
from left to right in rows
Font An abstract representation of a font
FontMetrics Abstract class for holding information
about a specific font's character
shapes and height and width information
Frame A top-level window with a title
Graphics Abstract behavior for representing a
graphics context, and for drawing and
painting shapes and objects
GridBagConstraints Constraints for components laid out
using GridBagLayout
GridBagLayout A layout manager that aligns components
horizontally and vertically based on
their values from GridBagConstraints
GridLayout A layout manager with rows and columns;
elements are added to each cell in the
grid
Image An abstract representation of a bitmap
image
Insets Distances from the outer border of the
window; used to lay out components
Label A text label for UI components
List A scrolling list
MediaTracker A way to keep track of the status of
media objects being loaded over the Net
Menu A menu, which can contain menu items
and is a container on a menu bar
MenuBar A menu bar (container for menus)
MenuComponent The abstract superclass of all menu
elements
MenuItem An individual menu item
Panel A container that is displayed
Point An object representing a point (x and y
coordinates)
Polygon An object representing a set of points
Rectangle An object representing a rectangle (x
and y coordinates for the top corner,
plus width and height)
Scrollbar A UI scrollbar object
TextArea A multiline, scrollable, editable text
field
TextComponent The superclass of all editable text
components
TextField A fixed-size editable text field
Toolkit Abstract behavior for binding the
abstract awt classes to a
platform-specific toolkit
implemen-tation
Window A top-level window, and the superclass
of the Frame and Dialog classes
java.awt.image
The java.awt.image package is a subpackage of the awt that
provides classes for managing bitmap images.
Interfaces
ImageConsumer Methods for receiving image data created by
an ImageProducer
ImageObserver Methods to track the loading and
construction of an image
ImageProducer Methods for producing image data received by
an ImageConsumer
Classes
ColorModel An abstract class for managing color
information for images
CropImageFilter A filter for cropping images to a
particular size
DirectColorModel A specific color model for managing
and translating pixel color values
FilteredImageSource An ImageProducer that takes an image
and an ImageFilter object and produces
an image for an ImageConsumer
ImageFilter A filter that takes image data from an
ImageProducer, modifies it in some
way, and hands it off to a
ImageConsumer
IndexColorModel A specific color model for managing
and translating color values in a
fixed-color map
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