This repo's code is written by following the Exploring-Lambda youtube video tutorials which are created by Sir Koushik Kathagal (Youtube Channel:Java Brain).
You can found those video tutorial at : https://www.youtube.com/channel/UCYt1sfh5464XaDBH0oH_o7Q (Don't forget to like or dislike, if you like please subscribe).
You can also follow him on Facebook: https://www.facebook.com/javabrains/
N.B: Code content for each video tutorial for this series has been placed at branch having the name of the video tutorial