Eclipse是开放源代码的项目，你可以到www.eclipse.org去免费下载Eclipse的最新版本，一般Eclipse提供几个下载版本：Release，Stable Build，Integration Build和Nightly Build，建议下载Release或Stable版本，笔者用的是Build20020125（Stable版本）。Eclipse本身是用Java语言编写，但下载的压缩包中并不包含Java运行环境，需要用户自己另行安装JRE，并且要在操作系统的环境变量中指明JRE中bin的路径。安装Eclipse的步骤非常简单：只需将下载的压缩包按原路径直接解压既可。 -Eclipse is open source projects, you can go to www.eclipse.org free download of the latest version of Eclipse, Eclipse generally provide several download Version : Release, Stable Build, Build and Integration Nightly Build, recommendations or Stable Release download version, the authors used the Build20020125 ( Stable version). Eclipse itself is using the Java programming language, but downloading compressed package does not include the Java runtime environment, users need to separately install the JRE themselves, and to the operating system environment variables specified JRE which bin path. Installation of Eclipse is a very simple : just download compressed original path can directly extract.