java基础-泛型学习

引用文章：https://www.cnblogs.com/wuqinglong/p/9456193.html#2%E7%B1%BB%E5%9E%8B%E6%93%A6%E9%99%A4%E5%90%8E%E4%BF%9D%E7%95%99%E7%9A%84%E5%8E%9F%E5%A7%8B%E7%B1%BB%E5%9E%8B

https://juejin.cn/post/6844903917835419661