關於「Java make package」標籤，搜尋引擎有相關的訊息討論：

How to create a package in java - Stack Overflowstackoverflow.com › questions › how-to-create-a-package-...7.9 Packages in Java Theory - YouTubewww.youtube.com › watchGradle Build Toolgradle.orgAdd Firebase to your Android projectfirebase.google.com › ... › Firebase for Android