# 所有程序包的分层结构

程序包分层结构:

- com.changda.gjjapp.gedai.service,
- com.changda.gjjapp.gedai.service.huankuan,
- com.changda.gjjapp.gedai.service.impl

## 类分层结构

- java.lang.Object
  - com.changda.gjjapp.gedai.service.impl.HuanKuanService (implements com.changda.gjjapp.gedai.service.IHuanKuanService)

## 接口分层结构

- com.changda.gjjapp.gedai.service.huankuan.IHuangKuanCalculateService
- com.changda.gjjapp.gedai.service.IHuanKuanService
- com.changda.gjjapp.gedai.service.huankuan.IZhuYueHuaKouCheckService