• Interface Summary 

  Interface	Description
  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 a 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.
  ProtocolFamily	Represents a family of communication protocols.
  SocketImplFactory	This interface defines a factory for socket implementations.
  SocketOption<T>	A socket option associated with a socket.
  SocketOptions	Interface of methods to get/set socket options.
  URLStreamHandlerFactory	This interface defines a factory for URL stream protocol handlers.

• Class Summary 

  Class	Description
  Authenticator	The class Authenticator represents an object that knows how to obtain authentication for a network connection.
  CacheRequest	Represents channels for storing resources in the ResponseCache.
  CacheResponse	Represent channels for retrieving resources from the ResponseCache.
  ContentHandler	The abstract class ContentHandler is the superclass of all classes that read an Object from a URLConnection.
  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.
  DatagramSocketImpl	Abstract datagram and multicast socket implementation base class.
  HttpCookie	An HttpCookie object represents an HTTP cookie, which carries state information between server and user agent.
  HttpURLConnection	A URLConnection with support for HTTP-specific features.
  IDN	Provides methods to convert internationalized domain names (IDNs) between a normal Unicode representation and an ASCII Compatible Encoding (ACE) representation.
  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.
  InetSocketAddress	This class implements an IP Socket Address (IP address + port number) It can also be a pair (hostname + port number), in which case an attempt will be made to resolve the hostname.
  InterfaceAddress	This class represents a Network Interface 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.
  NetworkInterface	This class represents a Network Interface made up of a name, and a list of IP addresses assigned to this interface.
  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.
  ProxySelector	Selects the proxy server to use, if any, when connecting to the network resource referenced by a URL.
  ResponseCache	Represents implementations of URLConnection caches.
  SecureCacheResponse	Represents a cache response originally retrieved through secure means, such as TLS.
  ServerSocket	This class implements server sockets.
  Socket	This class implements client sockets (also called just "sockets").
  SocketAddress	This class represents a Socket Address with no protocol attachment.
  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.
  StandardSocketOptions	Defines the standard socket options.
  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.
  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	Utility class for HTML form decoding.
  URLEncoder	Utility class for HTML form encoding.
  URLPermission	Represents permission to access a resource or set of resources defined by a given url, and for a given set of user-settable request methods and request headers.
  URLStreamHandler	The abstract class URLStreamHandler is the common superclass for all stream protocol handlers.

• Enum Summary 

  Enum	Description
  Authenticator.RequestorType	The type of the entity requesting authentication.
  Proxy.Type	Represents the proxy type.
  StandardProtocolFamily	Defines the standard families of communication protocols.

• Exception Summary 

  Exception	Description
  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.
  HttpRetryException	Thrown to indicate that a HTTP request needs to be retried but cannot be retried automatically, due to streaming mode being enabled.
  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.
  PortUnreachableException	Signals that an ICMP Port Unreachable message has been received on a connected datagram.
  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 creating or accessing a Socket.
  SocketTimeoutException	Signals that a timeout has occurred on a socket read or accept.
  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.
  URISyntaxException	Checked exception thrown to indicate that a string could not be parsed as a URI reference.

Package java.net Description

 URI uri = new URI("http://java.sun.com/");
 URL url = uri.toURL();
 InputStream in = url.openStream();
 

Since:

JDK1.0