In this video, I have explained How HashMap works internally, what is hashing and HashCode, what is indexing and how is it calculated from Hashcode? This is a very popular java interview question on collection (HashMap). References taken from: Java 8 API Doc Oracle Java 8 Source Code Geeks of geeks Full Java Collection Playlist: ~~~Subscribe to this channel, and press bell icon to get some interesting videos on Selenium and Automation: %20AutomationLabs?sub_confirmation=1 Follow me on my Facebook Page: Let's join our Automation community for some amazing knowledge sharing and group discussion on Telegram: Paid courses (Recorded) videos: For Java & Selenium – For API (Manual + Automation) –