Recommended Books

Java I/O ,
by Elliotte Rusty Harold , O'Reilly.

Java Network Programming
by Merlin and Conrad Hughes, Michael Shoffner, and Maria Winslow, Prentice-Hall.

Java Network Programming,
by Elliotte Rusty Harold , O'Reilly.

Java RMI,
by Troy Bryan Downing, IDG Books.

Essential JNI,
by Rob Gordon , Prentice-Hall.

Essential JavaBeans Fast,
by John Hunt, Springer.

Teach Yourself JavaBeans in 21 Days,
by Donald Doherty, Sams.net.

Developing Java Beans ,
by Robert Englander, O'Reilly.

Java Security ,
by Scott Oaks, O'Reilly.

Java Cryptography ,
by Jonathan Knudsen, O'Reilly.

Java Servlet Programming ,
by Jason Hunter with Willian Crawford, O'Reilly.

Core Java 2, Volume I , Fundamentals (Fourth Edition),
by Gary Cornell and Cay Horstmann, Prentice-Hall.

Core Java 2, Volume II , Advanced Features (Fourth Edition),
by Gary Cornell and Cay Horstmann, Prentice-Hall.

Thinking in Java ,
by Bruce Eckel, Prentice-Hall.