投而死面试

集合框架：

1.  hashMap hashTable ConCurrentHashMap区别

http://blog.csdn.net/wisgood/article/details/19338693

http://www.jb51.net/article/35523.htm

http://www.open-open.com/lib/view/open1350440858024.html  四种实现的区别

1.1  arraylist linkedlist vector 

http://blog.csdn.net/renfufei/article/details/17077425

http://www.cnblogs.com/jiangyi-uestc/p/5682699.html

1.2 hashset linkedhashset treeset

http://www.cnblogs.com/Terry-greener/archive/2011/12/02/2271707.html

http://www.cnblogs.com/ibook360/archive/2011/11/28/2266062.html

IO：

2.String StringBuffer StringBuilder区别

http://blog.csdn.net/rmn190/article/details/1492013

3.java jvm原理

4.fliter原理

http://blog.csdn.net/u013817349/article/details/50933097

http://blog.163.com/weilairencai@126/blog/static/36094100200973153159163/

5.算法  二分法

 http://www.cnblogs.com/sevenyuan/archive/2009/12/04/1616897.html

搜房天下：

1.手机号正则表达式

http://www.jianshu.com/p/e8477fdccbe9

2.数字

http://zhidao.baidu.com/link?url=CSVfbgWy2vcLjJIII7kZIm0vkYusyOIRw5QBcDB7GD-5S0eYslGgflRqIsVm-UM3_rqUyzw6pVjOvF_Bj5-JUq

3.线程几种状态

new runnable  running dead blocked 

4.计算1-100随机数没放进数组的

http://bbs.csdn.net/topics/320041324

mysql innodb

mysql 数据库优化

mysql sql 优化

java序列化：

http://www.cnblogs.com/xdp-gacl/p/3777987.html

socket 流传输

http://www.tuicool.com/articles/6ZFziq

spring 作用域 和各自的适用范围

http://blog.csdn.net/providencezy/article/details/1878582

spring beanfactory 和application context区别

http://www.cnblogs.com/kanghaimeng/p/4660042.html

String 和StringBuffer区别

http://www.cnblogs.com/A_ming/archive/2010/04/13/1711395.html

抽象类和接口的区别

http://www.cnblogs.com/yongjiapei/p/5494894.html