[PRACTICAL]How Hashmap works internally || Debugging || part 2

This tutorial covers how a hashmap works internally.We will go through a complete debugging and we will have a complete analysis of the below points :
1. how hashmap stores key-value pair (entry)
2. What happens when two keys have the same hashcode
3. What happens when two entries have same key (duplicate key)
4. what happens when we insert a key as null
we will also cover what we mean by a threshold and load factor in a hash map.
Watch the part 1 of this series at the below link :
How hashmap works internally (Overview)
• How HashMap works inte...
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[@Cristiann30]

I don't know why I cannot see the threshold, size, loadFactor, table variables in my debugging IDE. I can only see the map and its entries.

[@SeleniumExpress]

Hi Nastase, to view all the map properties please click on the "show logical structure" icon which is there at the top right corner of your variables section.
For more help,Please refer the below tutorial.
th-cam.com/video/6L_WRYFMZFE/w-d-xo.html

[@rajkhare5949]

@@SeleniumExpress I got the same issue...thanks now its resolved

[@kanikaagarwal5597]

Very good explanation.Watched a lot of videos on hashmap, but this one is the best so far. Thanks !

[@nirvanjain3021]

I agree!

[@nirvanjain3021]

Awesome. After these many years of industry experience, I just learned this Hash Map internal working.

[@pallavikaushik4578]

Best explanation of hashmap internal functioning so far...I read few articles but after this tutorial I don't need to refer any other documentation or social portal.
Much appreciated!!!
Keep up the good work

[@teacherrussell5206]

Great job. Teaching IDE, debugging, and underlying implementation of Collection classes all in one shot:) You are the Collection King.

[@prajwal9610]

The way you explain by debugging the hashmap implementation is awesome. It gives detailed understaing of how hashmap works. Thanks.

[@vishalgaikwad873]

Really finally I got internal representation of map.
Thank a lot.

[@varshinikaithapuram6189]

Very nice explanation. This could be very helpful for those folks attending interviews with MNC companies. Thank you!

[@anuragbharti3773]

Wow. One of the best video on hashmap. Paused the video in the middle and wrote the comment. Thank you so much for your efforts

[@yenamanenirohin864]

Thanks a lot....One video cleared all may doubts which i have been having since I started learning Java

[@md.faisalkhan8634]

Well explained,
Before watching this video I was already aware of the internal working of HashMap,
but know as saying goes there is always scope to learn from the newbie also, what more I could say bro you nailed in such an awesome manner -a practical in the layman way that even dumbest could get it.
KEEP IT UP.

[@abhimalvekr127]

Good job Dude. This is the best explanation I found on internal working of Map! Keep it up

[@bahmad2009]

Thank You for putting up this video explaining the Hashmap internals. It was helpful in understanding the concept.

[@pradeepikakollipara9236]

You nailed it with your wonderful explanation. This was one of the grey areas for me from many years and your video has solved it..keep going

[@SeleniumExpress]

Thanks, Deepika. Happy to know that this video helped you.

[@laxmiprajapati2192]

I had lots of confusion with Map but now its as clear as water...thank you

[@aasmakamaal4767]

Thanks alot.. This what i was searching for!.. The best video for hashmap working i came across till date🙌

[@mohanas6697]

Great Explanation. Now I got the idea on how it works...Thanks a Ton !

[@NoorAlam-vm7dg]

Finally doubt related to How hashMap works are cleared . Thank You.

[@vivekbhardwaj2785]

outstanding explanation. i watch many videos but did not get the exact flow ...this video cleared my doubt..thanks bro

[@rakesh12589]

I saw the first two parts of these video. And now liked this video even before watching it. Awesome explanation :)

[@SeleniumExpress]

Thank you, Rakesh.. So happy to know this helped you.

[@yogeshchaudhari9971]

What an amazing video it is...thank you so much...never had so much in depth clarity about hashmap earlier...itd amazing

[@manishnegi2882]

Very good dude, this vedio is much more powerful then previous one, you have done a very great job its more useful for experience person.
Thanks very well done..

[@subhaadhikary09]

Best tutorial so far. Thank you so much.

[@meghatiwari5225]

Simply I can say best way to explain hashmap.thankyou.

[@malashrimasnaik9069]

Really appreciate your effort to make us understand the concept deeply...Thank you very much very well expalined...

[@piyushjhawar7681]

Perfect explanation. Thanks a lot..

[@RahulPawar-ll8op]

All concept are clear about map & your talking assent is very good..

[@ranjeetnityanand2722]

After Durga Sir this is my second best Explanation Thank you.....

[@adityapratapsingh418]

Thanks a lot for this practical way of explanation..really cleared most of the doubts..

[@sravyaprathigadapa9958]

Nice explanation and now i am confident that i can answer any interview question based on hashmap. Thank you Abhilash

[@diotixz1334]

cool and different way of explaining this concept even more clear

[@mounikasure]

Best explanation so far!!!Thanks for helping us ❤

[@raghuakuthota4900]

Very good explanation. I Watched a lot of videos on hashmap, but this one is the best so far. Thanks lot !...

[@SeleniumExpress]

Thanks so much, Raghu.

[@swethasavant2520]

very well Explained..theorectically it's bit hard to understand this concept but this tutorial made it clear. Thanku sir

[@NavneetKumar-ih9gm]

hey man you are genius...i never ever seen a video like this....u made my day....thanks a lot...and i mean it... god bless you bro...

[@SeleniumExpress]

Thanks, Navneet.. Glad you liked the video.. Thank you so much for watching 😊

[@amolpatil2140]

Thanks for such straightforward Explanation....I am very Thankfull to you....👍👍

[@amoljadhav4841]

Thank you sir, I like your tutorials, this tutorial is very helpful for everyone, I am watch lot of videos but this tutorial is awesome, Love u sir, Thanks once again!!!!!!!

[@SeleniumExpress]

Amol Jadhav
Thanks for your kind words, Amol.. You are an awesome learner 😊

[@nilimadey8593]

Man man man, Holly Molly, loved it, please ,🙏🙏💓, bring more videos on java like this, to clear our concept, and please a video series on IBM JAVA INTERVIEW QUESTION, OR ON ANY OTHER COMPANY

[@kannathasanelangovan2710]

Really love the way to teach please do more videos on Java let the people understand from the basics

[@sachinthange]

Thanks for this wonderful tutorial explanation :)

[@110NBB]

Thank you,i referred many videos,atlast this is the one i was looking for,thanks alot.

[@sydefx5451]

Such a great video enjoyed listening was easy explained
love your channel :)

[@shraddhaagarwal534]

U explain really well.. hope to see more videos.....

[@SeleniumExpress]

Thanks Shraddha..

[@1992Mrprateek]

Very helpful video bro... thank you so much. Stay blessed

[@SuperAamir9]

Finally i understood this, Thanks alot Sir. Please share the internal working of HashSet.

[@madanmohanpachouly6135]

You nailed it Man.. Thanks for ur efforts

[@subashramadoss4236]

Neat Explanation. Got cleared my doubts on seeing your video :)

[@SeleniumExpress]

Subash Ramadoss Thanks, Subash

[@trendingtechnologiesit924]

Thanks a lot for posting the video with the full details for Map internal mechanism.

[@SeleniumExpress]

veera shankara ravindrareddy kakarla you are welcome!! Thanks so much for watching 😊

[@trendingtechnologiesit924]

Quick comment..... you are very active

[@siddharthmishra8294]

Great job Abhilash.. Keep it up!!!

[@SeleniumExpress]

Thanks, Siddharth.

[@gagandeepsingh-lh5nt]

thanks bro...for clearing my concept..best video on hashmap

[@satishrock9621]

Thanks a ton Bro. Really this is the way to dig into Programming Language

[@SeleniumExpress]

You are welcome, Satish.

[@stankomaslek2402]

You are the Man... best regards...

[@sau5040]

Thank you so much, you have explained very well 🙏

[@balanssocial1880]

nice practical video each point can be easily understood

[@anantpatil3393]

Very very good explanation brother. Thanks for Making it easy with debugging explanation.... keep going

[@jahangirkhan8019]

Thank you brother both videos are very detailed.

[@souvaniksaha]

Thank you so much .Really this was a great explanation.

[@tauseefahmad8041]

thanks for throwing light on internal working of HashMap

[@blessyRelatable]

A very clear explanation...thank you so much

[@vishnusasi7901]

Very Informative. Thanks !

[@DB-xe3ws]

thanks a lot, enjoyed learning this!!

[@shashikiran3238]

Thank u so much for a clean explanation 👌👌👍👍👍

[@Pm80334]

Brilliant boss take a bow .Plz put an elaborate debugging of put () 👍👍👍

[@tani2729]

The Best, thanks for your effort

[@alexiscrixus7837]

Terrific dude! Greetings from Chile!

[@vickyraj541]

really appricite your work , thanks a lot!

[@SandeepSingh-ns2db]

Awesome. Very good explanation. Well done

[@mkkamle]

excellent explanation,loved it.

[@stutigawande6835]

Very well explained with example.

[@akshatjain9762]

Amazing explained
thanks a lot !!

[@santhoshchandran6952]

Well explained abilash, thank u

[@ananyaujas8464]

Excellent explanation tqs for making this video..

[@chidanandasutar9105]

Nicely explained. Thanks a lot 🙏

[@somanathreddy3121]

Grt job bro...tq for your clear explanation

[@faizanahmad7475]

V good superb ..
Because i have swen the 1st time and i understand properly

[@naveenkumarmaddala7830]

Hi Abhilash, Thanks for sharing the video. Could you please provide more details about modCount. What is the purpose and when it is useful?

[@nandhakumara962]

That' great video.. Plz post the same for Treemap. It will help us to understand the working logic of Tree Map

[@alekhyaarani9506]

Really awesome explanation

[@anandjha5353]

Superb I saw almost all videos n liked too.

[@SeleniumExpress]

Thanks, Anand.. You are awesome!!

[@pradeepseth6797]

Thanks for clean and crispy explanation. I have a small issue on eclipse, while debugging, on "Variables" panel on expand of map reference, not getting, All the properties, as entrySet, table etc.Anyone else also getting the same issue.

[@musharrafarain8902]

good explanation i have clear my concept.

[@sureshm2047]

Really given clear cut explanation thanks a lot..

[@SeleniumExpress]

Thank you Suresh..

[@DineshKumar-ph3uq]

Great explanation

[@prateekjain5308]

great work buddy, keep it up :)

[@chamanthisharwa6618]

Thank you thank you so much sir, great 👍👏😊 explanation.

[@MOHITSINGH-cv5qe]

indepth explained , thanks , it helped a lot.................................

[@macherladevasundaram4928]

V good explanation bro.. Thank u so much...

[@satheeshraja7762]

Such a nice tutorial bro keep it up 👏👏👏

[@yatendra__singh]

Great session

[@ManojGupta-kx9qv]

Good Explanation...Thanks

[@tindo0038]

Excellent explanation

[@practicaltalks5097]

Thanks alot...Respect from Pakistan.

[@SonalGupta25]

Amazing explanation when u have no idea about HashMap!!

[@SeleniumExpress]

Thanks, Sonal.

[@swapnilbhad3216]

Nice explaination!!

[@maheshyr2654]

very nice videos bro ... do like this for max core java concepts

[@robintyagi2366]

These are the best tutorials available on the internet or anywhere. There is only one doubt from the video, how do we generate index from the hashCode, @Abhilash, could you please guide.

[@prajwalkr4276]

Fidaaa, crores of thanx

[@grunze]

Just a quick tip. Please stop referring Node as a linked list. A list does not have a key value pair. A map does. Its a key value pair(or a mapping). Other than that, excellent explanation and kudos showing the debugger. Thank you!

[@sadiqc8153]

Bro great explanation thnks for this effort ..

[@tsuresh2587]

Thank you.
Please make one video about how put(-,-) will work step by step internally.