java和javac都能显示版本
Failed to run "javac -version", make sure that you have a JDK version 8 installed.
You can get it from the following location:
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Your JAVA_HOME is invalid: C:\Program Files\Java\jdk1.8.0_111
求解是怎么回事
重启电脑就好了