[ADD] all classes and packages according to class diagram

app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.NextLocation">
-        <activity android:name=".fragments.MainActivity">
+        <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/a1/nextlocation/MainActivity.java

@@ -1,4 +1,4 @@
-package com.a1.nextlocation.fragments;
+package com.a1.nextlocation;
 
 import androidx.appcompat.app.AppCompatActivity;
 

app/src/main/java/com/a1/nextlocation/data/Coupon.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.data;
+
+public class Coupon {
+}

app/src/main/java/com/a1/nextlocation/data/Data.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.data;
+
+public class Data {
+}

app/src/main/java/com/a1/nextlocation/data/FileIO.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.data;
+
+public class FileIO {
+}

app/src/main/java/com/a1/nextlocation/data/Location.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.data;
+
+public class Location {
+}

app/src/main/java/com/a1/nextlocation/data/Route.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.data;
+
+public class Route {
+}

app/src/main/java/com/a1/nextlocation/fragments/HelpPopup.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.fragments;
+
+public class HelpPopup {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/CouponAdapter.java

@@ -0,0 +1,8 @@
+package com.a1.nextlocation.recyclerview;
+
+public class CouponAdapter {
+
+    class CouponViewHolder {
+
+    }
+}

app/src/main/java/com/a1/nextlocation/recyclerview/CouponListManager.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class CouponListManager {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/CouponLoader.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class CouponLoader {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/LocationAdapter.java

@@ -0,0 +1,8 @@
+package com.a1.nextlocation.recyclerview;
+
+public class LocationAdapter {
+
+    class LocationViewHolder {
+
+    }
+}

app/src/main/java/com/a1/nextlocation/recyclerview/LocationListManager.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class LocationListManager {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/LocationLoader.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class LocationLoader {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/RouteAdapter.java

@@ -0,0 +1,8 @@
+package com.a1.nextlocation.recyclerview;
+
+public class RouteAdapter {
+
+    class RouteViewHolder {
+
+    }
+}

app/src/main/java/com/a1/nextlocation/recyclerview/RouteListManager.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class RouteListManager {
+}

app/src/main/java/com/a1/nextlocation/recyclerview/RouteLoader.java

@@ -0,0 +1,4 @@
+package com.a1.nextlocation.recyclerview;
+
+public class RouteLoader {
+}

app/src/main/res/layout/activity_main.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".fragments.MainActivity">
+    tools:context=".MainActivity">
 
     <TextView
         android:layout_width="wrap_content"