Maven実行時に出るWarningを修正
Revert "Maven実行時に出るWarningを修正"

This reverts commit d07669a5523a5bfec9398c00bcf0803dd7130117.
Maven実行時に出るWarningを修正
Merge pull request #10 from Y-Fujikawa/master

Maven実行時に出るWarningを修正