NETWORKING CLASSES & INTERFACES

• The java.net package provides the interfaces and classes for implementing networking applications.
  
  
  Interfaces of java.net package

  Interface	Use
  ContentHandlerFactory	This interface defines a factory for content handlers.
  CookiePolicy	CookiePolicy implementations decide which cookies should be accepted and which should be rejected.
  CookieStore	A CookieStore object represents storage for cookie.
  DatagramSocketImplFactory	This interface defines a factory for datagram socket implementations.
  FileNameMap	A simple interface which provides a mechanism to map between a file name and a MIME type string.
  SocketImplFactory	This interface defines a factory for socket implementations.
  SocketOptions	Interface of methods to get/set socket options.
  URLStreamHandlerFactory	This interface defines a factory for URL stream protocol handlers.

  
  
  Classes of java.net package
  The classes in the networking package fall into three general categories:
    Web interface classes
•   URL and URLConnection classes
•   Raw network interface classes 

Class	Use
ContentHandler	Super class of the classes that turn MIME objects into corresponding Java objects
CookieHandler	A CookieHandler object provides a callback mechanism to hook up a HTTP state management policy implementation into the HTTP protocol handler.
CookieManager	CookieManager provides a concrete implementation of CookieHandler, which separates the storage of cookies from the policy surrounding accepting and rejecting cookies.
DatagramPacket	This class represents a datagram packet.
DatagramSocket	This class represents a socket for sending and receiving datagram packets.
Inet4Address	This class represents an Internet Protocol version 4 (IPv4) address.
Inet6Address	This class represents an Internet Protocol version 6 (IPv6) address.
InetAddress	This class represents an Internet Protocol (IP) address.
NetPermission	This class is for various network permissions.
PasswordAuthentication	The class PasswordAuthentication is a data holder that is used by Authenticator.
Proxy	This class represents a proxy setting, typically a type (http, socks) and a socket address.
ResponseCache	Represents implementations of URLConnection caches.
ServerSocket	This class implements server sockets.
Socket	This class implements client sockets (also called just "sockets").
URI	Represents a Uniform Resource Identifier(URI) reference.
URL	Class URL represents a Uniform Resource Locator, a pointer to a "resource" on the World Wide Web.
URLConnection	The abstract class URLConnection is the superclass of all classes that represent a communications link between the application and a URL.