com/example/exp2/BuildConfig.java
 com.example.exp2.BuildConfig
com/example/exp2/MainActivity.java
 com.example.exp2.MainActivity
 com.example.exp2.MainActivity$1
com/example/exp2/Customer.java
 com.example.exp2.Customer
com/example/exp2/AddCustomerActivity.java
 com.example.exp2.AddCustomerActivity
 com.example.exp2.AddCustomerActivity$1