http://blog.csdn.net/qq_31655965/article/details/55049192
http://blog.csdn.net/qq_27093465/article/details/52180865
Java：枚举类enum
转载于:https://www.cnblogs.com/huiAlex/p/8338283.html
http://blog.csdn.net/qq_31655965/article/details/55049192
http://blog.csdn.net/qq_27093465/article/details/52180865
转载于:https://www.cnblogs.com/huiAlex/p/8338283.html