基于poi的Excel和commons-csv的CSV操作组件

Returns the enum for matching the provided qualifier value.

java试题,供java程序员检查自己的学习成果。班门弄斧，主要为了下载一些好的程序(java test)

用JAVA写的带通滤波代码，实现思路很简单，没有采用各种数字滤波的方法。而是通过傅里叶变换到频域，将要求外的频率均置0，再逆傅里叶变换得到的。效果还不错。(Written using JAVA bandpass filtering code to achieve the idea is very simple, without using a variety of digital filtering approach. But through the Fourier transform to the frequency domain, the frequency requirements are set to 0, then the inverse Fourier transform. Results were pretty good.)

说明：  java mainshi baoduan gaojipian

osb访问数据库例子，很难找，分享出来给大家使用，请大家支持(osb access to the example, it is difficult to find, share out for everyone to use, please support)

Tests regular expressions containing.

oscache的缓存实例，可以用于学习二级级缓存，及应用到项目中，加速数据库查找效率。(oscache cache instance, can be used to study the two-level cache, and applied to the project, to accelerate the efficiency of database lookup.)

A test of java hash map

几个github常用的代码，附带head first java 初步学习教材(Several commonly used code github, as well as with the primary learning java foreign translation of textbooks)

说明：  libdmtx库的使用及对data matrix码检测识别(Use of libdmtx library and detection and identification of data matrix code)