1.面向对象之封装、继承、多态
答:http://blog.youkuaiyun.com/csh624366188/article/details/7285728
2.String、StringBuilder/StringBuffer区别
答:http://blog.youkuaiyun.com/clam_clam/article/details/6831345
3.UML中几种类之间的关系:继承、实现、依赖、关联、聚合、组合
答:http://blog.youkuaiyun.com/shan9liang/article/details/6705728
http://blog.youkuaiyun.com/vickyway/article/details/7583545
4.深入理解Java异常处理机制
答:http://blog.youkuaiyun.com/hguisu/article/details/6155636
5.Java内存分配和String类型的深度解析
答:http://blog.youkuaiyun.com/w20096019/article/details/45913431
6.Java中的拆箱和装箱
答:http://blog.youkuaiyun.com/jackiehff/article/details/8509056
7.Java多线程
答:http://blog.youkuaiyun.com/zhangpengju999/article/details/10756659
8.Java中的流
答:http://blog.youkuaiyun.com/hguisu/article/details/7418161
9.Java中的集合
答:http://blog.youkuaiyun.com/zhangerqing/article/details/8122075
10.数据库事务隔离级别
答:http://blog.youkuaiyun.com/fg2006/article/details/6937413
http://my.oschina.net/mushui/blog/161452
11.Java网络编程
答:http://blog.youkuaiyun.com/decting/article/details/45110559
12.接口与抽象类的区别
答:http://blog.youkuaiyun.com/xw13106209/article/details/6923556