2017年9月27日
bounded generic type
摘要： 37 down vote If you have a class hierarchy A, B is a subclass of A, and C and D both are subclass of B like below class A {} class B extends A {} clas 阅读全文
posted @ 2017-09-27 16:04 jvava 阅读(105) 评论(0) 推荐(0) 编辑