# yum install java-1.7.0-openjdk
# yum install java-1.7.0-openjdk-devel
需要执行以上两步
查看版本
# java -version
java version "1.7.0_71"
OpenJDK Runtime Environment (rhel-2.5.3.1.el6-x86_64 u71-b14)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
原文：http://www.cnblogs.com/ratooner/p/4135844.html