以前安装JDK,需要手动配置环境变量。JDK8以后多了自动配置环境变量,所以可以不用手动配置。如果我已经装了JDK8,还想再装一个JDK9,安装完,自动配置的环境变量会指向JDK9版本。
自动配置的环境变量是一个隐藏目录:C:\ProgramData\Oracle\Java\javapath
,删掉这个目录下的3个exe文件,系统就无法匹配到了。
自动匹配是匹配不到了,所以我们用老办法,手动配置环境变量即可。这样,我们可以根据环境变量里配置的JDK版本去实现版本切换了。
Spring Framework系列学习教程
License: MIT License
以前安装JDK,需要手动配置环境变量。JDK8以后多了自动配置环境变量,所以可以不用手动配置。如果我已经装了JDK8,还想再装一个JDK9,安装完,自动配置的环境变量会指向JDK9版本。
自动配置的环境变量是一个隐藏目录:C:\ProgramData\Oracle\Java\javapath
,删掉这个目录下的3个exe文件,系统就无法匹配到了。
自动匹配是匹配不到了,所以我们用老办法,手动配置环境变量即可。这样,我们可以根据环境变量里配置的JDK版本去实现版本切换了。
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