C:\Users\admin>java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
缺少註冊表信息
regedit
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment
"CurrentVersion"="1.8"
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.8
"JavaHome"="D:\develop\jdk1.8.0_20"
此方法無效