http://zhumeng8337797.blog.163.com/blog/static/1007689142012472620637/ alternative命令
http://blog.****.net/crystony/article/details/5633711 去除open-jdk
http://www.cnblogs.com/zhaofeng555/p/3450140.html 安装jdk
http://zhumeng8337797.blog.163.com/blog/static/1007689142012472620637/ alternative命令
http://blog.****.net/crystony/article/details/5633711 去除open-jdk
http://www.cnblogs.com/zhaofeng555/p/3450140.html 安装jdk