一、静态变量初始化顺序大家先看两个例子：（1）!(https://oscimg.oschina.net/oscnet/66be9168f7cdf36484b71f1d67069f12492.jpg)!(https://oscimg.oschina.net/oscnet/bf5d0b172f00f9aa237b3aee5b58cad5d0