te
Merge branch 'master' of https://github.com/Java8Workshop/Exercises.git
Merge branch 'master' of https://github.com/Java8Workshop/Exercises.git
Merge branch 'master' of https://github.com/Java8Workshop/Exercises.git
練習問題2　岡本
Merge branch 'master' of https://github.com/Java8Workshop/Exercises.git