The operating system is immaterial. It is the languages used that are important. If you are targeting a specific platform then it obviously makes sense to develop upon that platform, but for cross-platform programming it really makes no difference what operating system you use.
API
Windows XP Professional is an operating system.
One is an operating system, the other two are office suites. You can't compare an office suite with an operating system in any meaningful way.
This is not really a good comparison. It's like asking if a telephone is better than a TV. OK, well Android is an operating system, based on Linux (similar to Unix). Java is a programming language - a set of rules that programmers use to create the programs (apps). The operating system controls the basic functions and how the phone (or tablet) interacts with files and the user.
win2000 professional
h! what is the characteristics of operating system?
use better gramer
A file cabinet.
Windows Vista
It's not.
The performance of an operating system is dependent upon the task they are performing and the hardware they are running on. There is no absolute measure of better performance.
An operating system (OS) is an interface between hardware and user which is responsible for the management and coordination of activities and the sharing of the resources of a computer, that acts as a host for computing applications run on the machine. As a host, one of the purposes of an operating system is to handle the resource allocation and access protection of the hardware. This relieves the application programmers from having to manage these details.