java.net

Interfaces

ContentHandlerFactory	Defines a factory which is responsible for creating a `ContentHandler`.
CookiePolicy	CookiePolicy has three pre-defined policy.
CookieStore	A CookieStore object is a repository for cookies.
DatagramSocketImplFactory	This interface defines a factory for datagram socket implementations.
FileNameMap	Defines a scheme for mapping a filename type to a MIME content type.
SocketImplFactory	This interface defines a factory for socket implementations.
SocketOptions	Defines an interface for socket implementations to get and set socket options.
URLStreamHandlerFactory	Defines a factory which creates an `URLStreamHandler` for a specified protocol.

Classes

Authenticator	An implementation of this class is able to obtain authentication information for a connection in several ways.
CacheRequest	`CacheRequest` is a kind of channel for storing resource data in the `ResponseCache`.
CacheResponse	A response cache entry.
ContentHandler	This class converts the content of a certain format (i.e.
CookieHandler	This class provides a way to manage cookies with a HTTP protocol handler.
CookieManager	This class provides a concrete implementation of CookieHandler.
DatagramPacket	This class represents a datagram packet which contains data either to be sent or received through a `DatagramSocket`.
DatagramSocket	This class implements a UDP socket for sending and receiving `DatagramPacket`.
DatagramSocketImpl	The abstract superclass for datagram and multicast socket implementations.
HttpCookie	An opaque key-value value pair held by an HTTP client to permit a stateful session with an HTTP server.
HttpURLConnection	An `URLConnection` for HTTP (RFC 2616) used to send and receive data over the web.
IDN	Converts internationalized domain names between Unicode and the ASCII Compatible Encoding (ACE) representation.
Inet4Address	An IPv4 address.
Inet6Address	An IPv6 address.
InetAddress	An Internet Protocol (IP) address.
InetSocketAddress	This class represents a socket endpoint described by a IP address and a port number.
InterfaceAddress	Identifies one of a network interface's addresses.
JarURLConnection	This class establishes a connection to a `jar:` URL using the `JAR` protocol.
MulticastSocket	This class implements a multicast socket for sending and receiving IP multicast datagram packets.
NetPermission	This class represents permissions to configure the access to network resources.
NetworkInterface	This class is used to represent a network interface of the local device.
PasswordAuthentication	This immutable class is a data structure that encapsulates username and password which is used by the `Authenticator` class.
Proxy	This class represents proxy server settings.
ProxySelector	Selects the proxy server to use, if any, when connecting to a given URL.
ResponseCache	Caches `URLConnection` responses.
SecureCacheResponse	A secure cache response represents data which is originally retrieved over a secure connection.
ServerSocket	This class represents a server-side socket that waits for incoming client connections.
Socket	Provides a client-side TCP socket.
SocketAddress	This abstract class represents a protocol-independent base for socket-endpoint representing classes.
SocketImpl	This class is the base of all streaming socket implementation classes.
SocketPermission	Regulates the access to network operations available through sockets through permissions.
URI	This class represents an instance of a URI as defined by RFC 2396.
URL	A URL instance specifies the location of a resource on the internet as specified by RFC 1738.
URLClassLoader	This class loader is responsible for loading classes and resources from a list of URLs which can refer to either directories or JAR files.
URLConnection	A connection to a URL for reading or writing.
URLDecoder	This class is used to decode a string which is encoded in the `application/x-www-form-urlencoded` MIME content type.
URLEncoder	This class is used to encode a string using the format required by `application/x-www-form-urlencoded` MIME content type.
URLStreamHandler	The abstract class `URLStreamHandler` is the base for all classes which can handle the communication with a URL object over a particular protocol type.

Enums

Authenticator.RequestorType	Enumeration class for the origin of the authentication request.
Proxy.Type	`Enum` class for the proxy type.

Exceptions

BindException	A `BindException` is thrown when a process cannot bind a local address/port, either because it is already bound or reserved by the OS.
ConnectException	A `ConnectException` is thrown if a connection cannot be established to a remote host on a specific port.
HttpRetryException	If a HTTP request has to be retried, this exception will be thrown if the request cannot be retried automatically.
MalformedURLException	This exception is thrown when a program attempts to create an URL from an incorrect specification.
NoRouteToHostException	The `NoRouteToHostException` will be thrown while attempting to connect to a remote host but the host cannot be reached for instance because of a badly configured router or a blocking firewall.
PortUnreachableException	This `PortUnreachableException` will be thrown if an `ICMP_Port_Unreachable` message has been received.
ProtocolException	Signals that either a connection attempt to a socket of the wrong type, the application of an unsupported operation or that a general error in the underlying protocol has occurred.
SocketException	This `SocketException` may be thrown during socket creation or setting options, and is the superclass of all other socket related exceptions.
SocketTimeoutException	This exception is thrown when a timeout expired on a socket `read` or `accept` operation.
UnknownHostException	Thrown when a hostname can not be resolved.
UnknownServiceException	Is thrown if no appropriate `ContentHandler` could be found for a particular service requested by the URL connection.
URISyntaxException	A `URISyntaxException` will be thrown if some information could not be parsed while creating a URI.