Generally this lab is to try out Java language features and the usage of third party libs.
It consists of some independent projects. Try maven build each first.

Try out Java features such as collections, concurrency, reflection, etc.

Basic usage of org.codehaus.jackson 1.8.5.

Basic usage of json-lib 2.3.

Basic usage of apache poi 3.10.1, jxl 2.6.12 and opencsv 2.3.
Java读写Excel：Apache POI, JXL与OpenCSV

Basic usage of in-process caches.

File monitor implemented by Timer and WatchService.
Java文件变更监控的两种实现