JDK8的更新版本也要服从新的许可协议

最近Java时常提醒要升级本机的JDK8,点开一看,里面还是用些门道的:简单地说就是,如果还想免费使用JDK8和分发JDK8开发的应用,那么就不能升级

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对话框是这个样子

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可以免费升级JDK8,但是升级以后不免费

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点击“更新”出现的窗口

然后仔细看了一下这个更新的JDK8许可协议(https://www.oracle.com/downloads/licenses/javase-license1.html,相关条款更新于2019年4月10日,附后)。大体意思是,如果更新JDK8的这个升级包,那么使用者就必须遵守(1)仅用于个人使用(2)仅用于开发用途(3)在Oracle同意的产品中使用 and/or(4)Oracle云基础设施(可以在Oracle云上,利用Oracle IaaS和PaaS产品的开发)。使用不可以做(1)不能删除相关产品使用说明和权利说明(2)不能给第三方使用3)不能向第三方分发(4)不能逆向工程(5)不能修改java、javax、sun、oracle名字下各种java包、类、接口和子包。而且JDK8是收到美国出口管控的,这个大家现在都知道含义和威力了。例如BIS、DoD的实体清单。

那么接受JDK8更新版的需求,需要付出多少经济代价呢?我们可以在这里找到Java SE的报价(https://www.oracle.com/corporate/pricing/#technology)。首先这不是一次性报价,而是云报价(根据用量每月付费):

  • SE桌面版订阅:最贵每人每月2.5美元;
  • SE其他订阅:最贵每处理器每月25美元;这里的CPU就是一个物理CPU,但是要结合用户数,一个服务器最少要设置10个用户。
    • 注意在Oracle许可中,处理器通常并不是一个CPU,而是CPU的每个core都要计算,但是这里面有一个权重表格(https://www.oracle.com/us/corporate/contracts/processor-core-factor-table-070634.pdf),大体意思是Intel的AMD的多核处理器,每个核按照0.5系数。Oracle自己的处理器优惠价,系数0.25,Oracle给别人定制的Sparc,系数0.5,IBM的按照1.0系数。如果服务器有2个24核CPU

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暂时没需求,还取消安装吧

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这是本机的JDK版本,版本差别很小


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JDK8的更新版本也要服从新的许可协议》有1个想法

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