Java 8 yukleyip, JAVA_HOME degiskenini ve PATH degiskenini Java 8 i gosterecek sekilde guncelleyip yeniden dener misin?
Java 8 Yuklemek icin: https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
Ortam degiskeni degistirmek icin: Installation and Administration Guide...