Support for selected BSD-style socket options in theNetworking Guidejava.netbase classes. With JDK 1.1,SocketandServerSocketare non-final, extendable classes. New subclasses ofSocketExceptionhave been added for finer granularity in reporting and handling network errors. The classMulticastSocketmoves fromsun.nettojava.net. Also includes general performance improvements and bug fixes.
Changes to the java.net package in JDK1.1
Networking API Reference
(javadoc)