嘿嘿嘿,工作需要,又做回Java开发了...于是想熟悉一下常用的开发包...apache common 系列的包便是首选..

以下是有必要需要了解的开发包--https://commons.apache.org/
学习一些比较常用...一直有更新的包...
对自己而言,如果没有时间看源码,至少也得会有,或者有一定的了解,你说,是吧

//以下是更新至2014
[BeanUtils](https://commons.apache.org/proper/commons-beanutils/)
这个名字看起来很熟,那就先从这个开始咯...

[Codec](https://commons.apache.org/proper/commons-codec/)

[DbUtils](https://commons.apache.org/proper/commons-dbutils/)

[Exec](https://commons.apache.org/proper/commons-exec/)

[Logging](https://commons.apache.org/proper/commons-logging/)


//以下更新至2015
[Pool](https://commons.apache.org/proper/commons-pool/)

[Math](https://commons.apache.org/proper/commons-math/)

[Lang](https://commons.apache.org/proper/commons-lang/)

[Jexl](https://commons.apache.org/proper/commons-jexl/)

[Email](https://commons.apache.org/proper/commons-email/)

[DBCP](https://commons.apache.org/proper/commons-dbcp/)

[Collections](https://commons.apache.org/proper/commons-collections/)

[CLI](https://commons.apache.org/proper/commons-cli/)

//以下更新至2016
[BCEL](https://commons.apache.org/proper/commons-bcel/)

[Compress](https://commons.apache.org/proper/commons-compress/)

[Configuration](https://commons.apache.org/proper/commons-configuration/)

[Crypto](https://commons.apache.org/proper/commons-crypto/)

[CSV](https://commons.apache.org/proper/commons-csv/)

[FileUpload](https://commons.apache.org/proper/commons-fileupload/)

[IO](https://commons.apache.org/proper/commons-io/)

[Net](https://commons.apache.org/proper/commons-net/)

[Validator](https://commons.apache.org/proper/commons-validator/)

[Validator](https://commons.apache.org/proper/commons-validator/)

[Weaver](https://commons.apache.org/proper/commons-weaver/)