小马哥的Java项目实战营 week-1 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/week-1 week-2 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/week-2 week-3 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/week-3 formal-week-1 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/formal-week-1 formal-week-2 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/formal-week-2 formal-week-3 作业地址：https://github.com/JenkinWang/geekbang-code/tree/master/formal-week-3