1、how to find out the Eclipse Version

 From Eclipse Menu Help ----> About Eclipse

It displayed as

Eclipse Java EE IDE for Web Developers.

Version: Helios Service Release 2
Build id: 20110218-0911

eclipse has a file .eclipseproduct in its root folder which contains its version.
When you open the file it will look likes 

name=Eclipse Platform
id=org.eclipse.platform
version=3.7.0

原文：http://www.cnblogs.com/chongxin/p/4520610.html