| BufferedInputStream | A buffered input stream |
| BufferedOutputStream | A buffered output stream |
| ByteArrayInputStream | An input stream from a byte array |
| ByteArrayOutputStream | An output stream to a byte array |
| DataInputStream | Enables you to read primitive Java types (ints, chars, booleans, and so on) from a sttream in a machine-independent way |
| DataOutputStream | Enables you to write primitive Java data types (ints, chars, booleans, and so on) to a sttream in a machine-independent way |
| File | Represents a file on the host’s file system |
| FileDescriptor | Holds onto the UNIX-like file descriptor of a file or socket |
| FileInputStream | An input stream from a file, constructed using a filename or descriptor |
| FileOutputStream | An output stream to a file, constructed using a filename or descriptor |
| FilterInputStream | Abstract class which provides a filter for input streams (and for adding stream futrctionality such as buffering) |
| FilterOutputStream | Abstract class which provides a filter for output streams (and for adding stream functionality such as buffering) |
| InputStream | An abstract class representing an input stream of bytes; the parent of all input streams in this package |
| LineNumberInputStream | An input stream that keeps track of line numbers |
| OutputStream | An abstract class representing an output stream of bytes; the parent of all output streams in this package |
| PipedInputStream | A piped input stream, which should 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 obects |
| SequenceInputStream | Converts a sequence of input streams into a single input stream |
| StreamTokenizer | Converts an input stream into a series of individual tokens |
| StringBufferInputStream | An input stream from a String object |
| 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 |
| BorderLayout | A layout manager for arranging items in border formation |
| Button | A UI pushbutton |
| Canvas | A canvas for drawing and performing other graphics oper-ations |
| CardLayout | A layout manager for HyperCard-like metaphors |
| Checkbox | A checkbox |
| CheckboxGroup | A group of exclusive checkboxes (radio buttons) |
| CheckboxMenuItem | A toggle menu item |
| Choice | A popup 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 |
| GridBagLayou | 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 menubar |
| MenuBar | A menubar (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 implementation |
Window A top-level window, and the superclass of the Frame and Dialog 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 an ImageConsumer |
| IndexColorModel | A specific color model for managing and translating color values in a fixed-color map |
| MemoryImageSource | An image producer that gets its image from memory; used after constructing an image by hand |
| PixelGrabber | An ImageConsumer that retrieves a subset of the pixels in an image |
| RGBImageFilter | Abstract behavior for a filter that modifies the RGB values of pixels in RGB images |
Each class in the AWT that inherits from either Component or MenuComponent has a corresponding peer class. Each of those classes is the name of the Component with -Peer added (for example, ButtonPeer, DialogPeer, and WindowPeer). Because each one
provides similar behavior, they are not enumerated here.
