1、下载JDK9
http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html
2、上传到虚拟机

3、安装JDK9
[root@park01 software]# rpm -ivh jdk-9.0.4_linux-x64_bin.rpm
4、配置环境变量
http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html