win10中jdk版本修改后报错解决

win10系统，把jdk1.8换成1.7后，命令行中java -version发现版本号仍是1.8。 报错：Error: Registry key ‘Software\JavaSoft\Java Runtime Environment’\CurrentVersion’ has value ‘1.7’, but ‘1.8’ is required. Error: could not find jav

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