com/example/exp72/SecondFragment.java
 com.example.exp72.SecondFragment
com/example/exp72/FirstFragment.java
 com.example.exp72.FirstFragment
com/example/exp72/BuildConfig.java
 com.example.exp72.BuildConfig
com/example/exp72/MainActivity.java
 com.example.exp72.MainActivity
 com.example.exp72.MainActivity$1
 com.example.exp72.MainActivity$2
 com.example.exp72.MainActivity$3
 com.example.exp72.MainActivity$4
 com.example.exp72.MainActivity$5
 com.example.exp72.MainActivity$6
 com.example.exp72.MainActivity$7
 com.example.exp72.MainActivity$8