Books/Materials for beginning Port Programing C++/Java

Question

I'm used to normal software programing using C++/Java. I'm interested in learning Port programming. Serial port or parallel port programming to control microchips or small electronic circuits.

But I don't have any knowledge in electronics,

EDIT

one simple example is trying to get a grid of LEDs to on to form a text inputed though the computer, but I dont have any knowledge in how to connect those LEDs and what sort of circuit to make (that was the electronic part) and how to connect it to the computer. that is a basic example of the kind of things i was thinking of, I wont to learn about them, still have no knowledge

Where should I start ? What are good reading materials or websites for a beginner ?

Thanx.

Answer 1

Use javax.comm.

Answer 2

rxtx is the way to go on the Java side. javax.comm is no longer and needs to be replaced by rxtx.
On the electronics side you do provide enough information to suggest anything.