1 X ContentHandlerFactory
4 X URLStreamHandlerFactory
15 * PasswordAuthentication
16 + PlainDatagramSocketImpl
17 + PlainSocketImpl (internal)
21 + SocketInputStream (internal)
22 + SocketOptions (internal)
23 + SocketOutputStream (internal)
32 X MalformedURLException
33 X NoRouteToHostException
36 X UnknownHostException
37 X UnknownServiceException
42 + Native DatagramSocketImpl
43 + Protocol Handler for HTTP
44 Protocol Handler for FTP
45 + ContentHandler for text
46 ContentHandler for gif
47 ContentHandler for jpeg