System inside the 3 types of menu options menu, context menu, sub menu

Day02Menu
.........\.classpath
.........\.project
.........\AndroidManifest.xml
.........\assets
.........\bin
.........\...\classes
.........\...\classes.dex
.........\...\.......\com
.........\...\.......\...\android
.........\...\.......\...\.......\basicapp
.........\...\.......\...\.......\........\BuildConfig.class
.........\...\.......\...\.......\........\Day02Activity.class
.........\...\.......\...\.......\........\R$attr.class
.........\...\.......\...\.......\........\R$drawable.class
.........\...\.......\...\.......\........\R$id.class
.........\...\.......\...\.......\........\R$layout.class
.........\...\.......\...\.......\........\R$string.class
.........\...\.......\...\.......\........\R.class
.........\...\Day02Menu.apk
.........\...\jarlist.cache
.........\...\res
.........\...\resources.ap_
.........\...\...\drawable-hdpi
.........\...\...\.............\ic_launcher.png
.........\...\...\drawable-ldpi
.........\...\...\.............\ic_launcher.png
.........\...\...\drawable-mdpi
.........\...\...\.............\ic_launcher.png
.........\...\...\drawable-xhdpi
.........\...\...\..............\ic_launcher.png
.........\gen
.........\...\com
.........\...\...\android
.........\...\...\.......\basicapp
.........\...\...\.......\........\BuildConfig.java
.........\...\...\.......\........\R.java
.........\proguard-project.txt
.........\project.properties
.........\res
.........\...\drawable-hdpi
.........\...\.............\ic_launcher.png
.........\...\drawable-ldpi
.........\...\.............\ic_launcher.png
.........\...\drawable-mdpi
.........\...\.............\ic_launcher.png
.........\...\drawable-xhdpi
.........\...\..............\ic_launcher.png
.........\...\layout
.........\...\......\main.xml
.........\...\values
.........\...\......\strings.xml
.........\src
.........\...\com
.........\...\...\android
.........\...\...\.......\basicapp
.........\...\...\.......\........\Day02Activity.java

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