entropy

The method setPrefix raises a INVALID_CHARACTER_ERR if the specified prefix contains an illegal character.

说明：  基于matlab平台，产生4FSK,2PSK数字信号(Generate 4FSK, 2PSK digital signal based on MATLAB platform)

Hadoop的一个教程，不错的书，值得收藏(Hadoop tutorial, a good book, worthy of collection)

说明：  mybatis3.5.0核心包，国内下载太麻烦，中转一下(Mybatis 3.5.0 core package, domestic download too troublesome, transfer)

用struts写的一个简易的后台，直接解压后导入eclipse即可运行，是很好的学习资料(Using struts to write a simple background, directly decompress and import eclipse to run, is a good learning material.)

Phone System Bar extends Custom Bar Source Code for Andriod.

说明：  java开发的bin packing， 个人感觉很有用。。。。可以下载学习(The bin packing developed by Java is very useful to me. Downloadable Learning)

有数据流图，er图，数据字典

一个健身俱乐部的源码，页面时有用jsp和jquery。比较完整，导入即可运行。数据库用的是mysql(A health club source, while a useful jsp page and jquery. More comprehensive introduction to run. Database using mysql)

head first 经典系列，无基础者使用最佳，图解丰富，引人入胜。(Head first classic series, without foundation use the best, graphic rich and attractive.)