| Authenticator | This abstract class provides a model for obtaining authentication
information (in the form of a username and password) required by
some network operations (such as hitting a password protected
web site). |
| BindException | This exception indicates that an error occurred while attempting to bind
socket to a particular port. |
| ConnectException | This exception indicates that an error occurred while attempting to
connect to a remote host. |
| ContentHandler | This is an abstract class that is the superclass for classes that read
objects from URL's. |
| ContentHandlerFactory | This interface maps MIME types to ContentHandler objects. |
| DatagramPacket | This class models a packet of data that is to be sent across the network
using a connectionless protocol such as UDP. |
| DatagramSocket | This class models a connectionless datagram socket that sends
individual packets of data across the network. |
| DatagramSocketImpl | This abstract class models a datagram socket implementation. |
| DatagramSocketImplFactory | This interface defines one method which returns a DatagramSocketImpl object. |
| FileNameMap | This interface has one method which, when passed a filename, returns
the MIME type associated with that filename. |
| HttpURLConnection | This class provides a common abstract implementation for those
URL connection classes that will connect using the HTTP protocol. |
| Inet4Address | |
| Inet6Address | |
| InetAddress | This class models an Internet address. |
| InetSocketAddress | InetSocketAddress instances represent socket addresses
in the java.nio package. |
| JarURLConnection | This abstract class represents a common superclass for implementations
of jar URL's. |
| MalformedURLException | This exception indicates that a URL passed to an object was not in a
valid format. |
| MulticastSocket | This class models a multicast UDP socket. |
| NetPermission | This class is used to model miscellaneous network permissions. |
| NetworkInterface | |
| NoRouteToHostException | This exception indicates that there is no TCP/IP route to the requested
host. |
| PasswordAuthentication | This class serves a container for username/password pairs. |
| PlainDatagramSocketImpl | This is the default socket implementation for datagram sockets. |
| PortUnreachableException | This exception signals that an ICMP port unreachable datagram has been
received. |
| ProtocolException | This exception indicates that some sort of low level protocol
exception occurred. |
| ServerSocket | This class models server side sockets. |
| Socket | This class models a client site socket. |
| SocketAddress | Abstract base class for InetSocketAddress. |
| SocketException | This exception indicates that a generic error occurred related to an
operation on a socket. |
| SocketImpl | This abstract class serves as the parent class for socket implementations. |
| SocketImplFactory | This interface defines one method which returns a SocketImpl object. |
| SocketOptions | This interface is used by SocketImpl and
DatagramSocketImpl to implement options
on sockets. |
| SocketPermission | This class models a specific set of permssions for connecting to a
host. |
| SocketTimeoutException | This exception signals that a socket read or accept timed out. |
| URI | |
| URISyntaxException | This exception is thrown when a String cannot be parsed as a URI. |
| URL | This final class represents an Internet Uniform Resource Locator (URL). |
| URLClassLoader | A secure class loader that can load classes and resources from
multiple locations. |
| URLConnection | This class models a connection that retrieves the information pointed
to by a URL object. |
| URLDecoder | This utility class contains static methods that converts a
string encoded in the x-www-form-urlencoded format to the original
text. |
| URLEncoder | This utility class contains static methods that converts a
string into a fully encoded URL string in x-www-form-urlencoded
format. |
| URLStreamHandler | This class is the superclass of all URL protocol handlers. |
| URLStreamHandlerFactory | This interface contains one method which maps the protocol portion of
a URL (eg, "http" in "http://www.urbanophile.com/arenn/") to a
URLStreamHandler object. |
| UnknownHostException | This exception indicates that an attempt was made to reference a hostname
or IP address that is not valid. |
| UnknownServiceException | Contrary to what you might think, this does not indicate that the
TCP/IP service name specified was invalid. |