Details ：The Oracle Java Archive offers self-service download access to some of our historical Java releases

背景介绍

到目前位置，随着技术的发展，Java虚拟机语言的高效，各种以Java为基础开发的软件，尤其银行业务，应用软件，越来越多，形成对Java语言的强大依赖之势。与此同时，Java Version Release亦在不断地升级。最常见的情况，比如使用网上银行，进行登陆/查询/支付/交易等，浏览器就会提示“下载Java虚拟机”。其他商业工业软件Production，同样需要Java环境的支持。

Question

因此，在用户角度来看，最好及时更新最新的JDK环境。The latest version is ： JDK-7u17. 但是在开发者角度来看，很多公司/个人仍在使用着JDK-6 。我们到底该用which version？？

Answer

请参看官网解释。

WARNING: These older versions of the JRE and JDK are provided to help developers debug issues in older systems. They are not updated with the latest security patches and are not recommended for use in production.

For production use Oracle recommends downloading the latest JDK and JRE versions and allowing auto-update.

Only developers and Enterprise administrators should download these old releases.

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老版本的JRE & JDK (1.5, 1.6), 被提供帮助Developers debug issues in older systems.l 

For developers in debug ：Continue to keep original JDK1.6 version (6-15, 6-28, 6-43 and so on)...

For common users in production ：Please update the latest JDK 1.7 version (7u17)  ...