How To: Create an Android App With Android Studio to Control LED?

In this tutorial here: https://www.instructables.com/id/Android-Bluetooth-Control-LED-Part-2/#step1 it says to "Import the followings packages:" in the DeviceList class. My question is, HOW DO YOU IMPORT these packages? Does it mean to copy and paste somewhere the two code snippets: #1 import android.widget.Button; and #2 import android.widget.ListView; into the DeviceList class, it doesn't say.  While I am new to instructables I do have some background in C#,  C++,  and other languages and I certainly am familiar with the "importing" feature in many programs but I never heard of "importing" directly into code. Can you please help me understand what it means to "import" in the tutorial. Thanks David Lee

Have you tried the documentation for Android Studio or asked the author of the Ible?

dmenefee (author)  Downunder35m28 days ago
I have tried DFAS but just what is ible if you don't mind me asking?

An Instructable is often shortened to 'Ible.