Class Summary |
Authenticator |
The class Authenticator represents an object that knows how to obtain
authentication for a network connection. |
ContentHandler |
The abstract class ContentHandler is the superclass
of all classes that read an Object from a
URLConnection . |
DatagramPacket |
This class represents a datagram packet. |
DatagramSocket |
This class represents a socket for sending and receiving datagram packets. |
DatagramSocketImpl |
Abstract datagram and multicast socket implementation base class. |
HttpURLConnection |
A URLConnection with support for HTTP-specific features. |
InetAddress |
This class represents an Internet Protocol (IP) address. |
JarURLConnection |
A URL Connection to a Java ARchive (JAR) file or an entry in a JAR
file. |
MulticastSocket |
The multicast datagram socket class is useful for sending
and receiving IP multicast packets. |
NetPermission |
This class is for various network permissions. |
PasswordAuthentication |
The class PasswordAuthentication is a data holder that is used by
Authenticator. |
ServerSocket |
This class implements server sockets. |
Socket |
This class implements client sockets (also called just
"sockets"). |
SocketImpl |
The abstract class SocketImpl is a common superclass
of all classes that actually implement sockets. |
SocketPermission |
This class represents access to a network via sockets. |
URL |
Class URL represents a Uniform Resource
Locator, a pointer to a "resource" on the World
Wide Web. |
URLClassLoader |
This class loader is used to load classes and resources from a search
path of URLs referring to both JAR files and directories. |
URLConnection |
The abstract class URLConnection is the superclass
of all classes that represent a communications link between the
application and a URL. |
URLDecoder |
The class contains a utility method for converting from
a MIME format called "x-www-form-urlencoded "
to a String
To convert to a String , each character is examined in turn:
The ASCII characters 'a ' through 'z ',
'A ' through 'Z ', and '0 '
through '9 ' remain the same. |
URLEncoder |
The class contains a utility method for converting a
String into a MIME format called
"x-www-form-urlencoded " format. |
URLStreamHandler |
The abstract class URLStreamHandler is the common
superclass for all stream protocol handlers. |
Exception Summary |
BindException |
Signals that an error occurred while attempting to bind a
socket to a local address and port. |
ConnectException |
Signals that an error occurred while attempting to connect a
socket to a remote address and port. |
MalformedURLException |
Thrown to indicate that a malformed URL has occurred. |
NoRouteToHostException |
Signals that an error occurred while attempting to connect a
socket to a remote address and port. |
ProtocolException |
Thrown to indicate that there is an error in the underlying
protocol, such as a TCP error. |
SocketException |
Thrown to indicate that there is an error in the underlying
protocol, such as a TCP error. |
UnknownHostException |
Thrown to indicate that the IP address of a host could not be determined. |
UnknownServiceException |
Thrown to indicate that an unknown service exception has
occurred. |
Provides the classes for implementing networking applications. Using the socket
classes, you can communicate with any server on the Internet or implement your
own Internet server. A number of classes are provided to make it convenient to
use Universal Resource Locators (URLs) to retrieve data on the Internet.