I am a novice developer and i thought it free until i read this(at underline).

Frequently Asked Questions
Is Java still free and open source?
The current version of Java - Java SE 6 - is free and available for redistribution for general purpose computing. Java SE continues to be available under the Oracle Binary Code License (BCL) free of charge. JRE use for embedded devices and other computing environments may require a license fee from Oracle. Read more about embedded use of Java SE or contact your local Oracle sales representative to obtain a license

From

http://www.oracle.com/technetwork/java/javase/overview/faqs-jsp-136696.html

Anyone can give me an answer and explain for it? I am really confuse now.

Thank for an answer.

Yes, JDK is open source so obviously free.

You can download JDK 6 from : http://goo.gl/5pkRM