Android package location in Android Studio

Question

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

I studied the directory structure in And

Answer 1

Quick Answer to quick beginner

This all classes coming from android.jar (The platform that you selected for your project) and these all are .class files (Byte code only). You can't modify it.

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