What is the main difference between Java platform and other platforms?

Question

Hello
What is the main difference between Java platform and other platforms in java?
please reply me. i am waiting for your reply.
Thanx

Answer 1

The Java platform differs from most other platforms in that it's a software-only platform that runs on top of other hardware-based platforms.
The Java platform has three elements:
Java programming language
The Java Virtual Machine (Java VM)
The Java Application Programming Interface (Java API)

Answer 2

http://java-gateway.blogspot.com/2012/01/what-is-main-difference-between-java.html