摘要：
原文链接：http://developer.51cto.com/art/200906/130414.htm先看个问题：一、相关类class A ...{ public String show(D obj)...{ return ("A and D"); } public String show(A obj)...{ return ("A and A"); } } class B extends A...{ public String show(B obj)...{ ... 阅读全文
