Spec-Zone .ru
спецификации, руководства, описания, API
java.net
Interfaces 
ContentHandlerFactory
CookiePolicy
CookieStore
DatagramSocketImplFactory
FileNameMap
ProtocolFamily
SocketImplFactory
SocketOption
SocketOptions
URLStreamHandlerFactory
Classes 
Authenticator
CacheRequest
CacheResponse
ContentHandler
CookieHandler
CookieManager
DatagramPacket
DatagramSocket
DatagramSocketImpl
HttpCookie
HttpURLConnection
IDN
Inet4Address
Inet6Address
InetAddress
InetSocketAddress
InterfaceAddress
JarURLConnection
MulticastSocket
NetPermission
NetworkInterface
PasswordAuthentication
Proxy
ProxySelector
ResponseCache
SecureCacheResponse
ServerSocket
Socket
SocketAddress
SocketImpl
SocketPermission
StandardSocketOption
URI
URL
URLClassLoader
URLConnection
URLDecoder
URLEncoder
URLStreamHandler
Enums 
Authenticator.RequestorType
Proxy.Type
StandardProtocolFamily
Exceptions 
BindException
ConnectException
HttpRetryException
MalformedURLException
NoRouteToHostException
PortUnreachableException
ProtocolException
SocketException
SocketTimeoutException
UnknownHostException
UnknownServiceException
URISyntaxException