Hello!
Answers are following

> Sir!
> I want to ask some questions about Java Language to
> know its pros and cons as I had selected it as me
> specialized field of language. As Java is completely
> OOP, easy, user friendly and task oriented. I had
> studied Wrox books on Java but didn?t clear about
> these questions!
> 1. Did Java provide programming facilities at
> lower/machine/hardware level?
+++ No. Only High-Level API

> 2. Can we program in Java for any application like in
> C++ or Java is only specialize for
> Internet/client-server program development?
+++ Yes, using java you can write applications as well as in other
languages!

> 3. Can we develop operating system in Java as we can
> in C++ or it is dependent on underlying operating
> systems using JVM to execute?
+++ Actually there is several projects making JavaOS.
In fact, pure java OS requires hardware support form JVM byte-code.
So until there is no processor understanding java bytecode instructions, no
pure java OS may be done.

>  If it does not provide these features then how Java
> is enhance version of  C++.
+++ Sorry, could not understand question (English is not my mother tongue).

> I will be thankful for your corporation in this
> regard, so please send answers of these question  at
> my email: nauman4862@y...  .