06 2016 档案

Effective Java 英文 第二版 读书笔记 Item 10:Always override toString
摘要：for example,PhoneNumber@163b91 class name+@+unsigned hexadecimal representation of hashcode. define: a concise but informative representation that is 阅读全文
posted @ 2016-06-08 15:06 郁闷紫番薯 阅读(116) 评论(0) 推荐(0)
Effective Java 英文 第二版 读书笔记 Item 9:Always override hashCode when you override equals
摘要：you must override hashCode in every class that overrides equals,particularly HashMap,HashSet,Hashtable. The key provision that is violated when you fa 阅读全文
posted @ 2016-06-07 09:39 郁闷紫番薯 阅读(192) 评论(0) 推荐(0)