1.jdk下载安装
http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html
2.配置环境变量
JAVA_HOME
C:Program FilesJavajdk1.8.0_181
Path
%JAVA_HOME%in;
%JAVA_HOME%jrein;
3.检查环境
cmd>java -version
http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html
C:Program FilesJavajdk1.8.0_181
%JAVA_HOME%in;
%JAVA_HOME%jrein;
cmd>java -version