>What is the major benefit of Java that distinguished it to other language?
>
>Nafee

Check out this white paper, it gives you Sun's opinion on that topic, put in the best possible terms.
http://java.sun.com/docs/white/langenv/

Java doesn't seem to be a good choice for real-time systems... (too slow)
http://www.realtime-info.be/magazine/98q1/1998q1_p006.pdf

There are other problems with Java, some real and some contrived by Sun's competitors.
A brief academic presentation of Java's problems, and a good learning tool from Monash University (it's free!), is found at http://www.bluej.org/why/why.html

A good Java language book is 'Thinking in Java'. You can download a free e-book version (html, pdf) from http://www.mindview.net/Books/TIJ/javabook.html

Good luck!
JLK