JavaTM 2 Platform
Std. Ed. v1.4.2

Package java.net

Provides the classes for implementing networking applications.

See:
          Description

Interface Summary
ContentHandlerFactory This interface defines a factory for content handlers.
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.
 

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.
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.
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.
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.
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.
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.
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 in the underlying protocol, such as a TCP error.
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

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.

Since:
JDK1.0

JavaTM 2 Platform
Std. Ed. v1.4.2

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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