win10中jdk版本修改後報錯解決

win10系統，把jdk1.8換成1.7後，命令行中java -version發現版本號仍是1.8。 報錯：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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