How HashMap Works Internally in Java | Core Java Interview question

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How HashMap Works Internally in Java is explained in this video.

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How hashmap works internally in java

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I don't know why your videos are not getting much popularity but the fact is you always explain the things in most genuine and elaborative way .

dhirajchandra

Great explanation!!! I have been looking for the better explanation in many of the other tutorials of this topic, but nothing satisfied. This is best!!! Thank you

pymohamedhussain

I have never found anyone so clear in concepts. Thank you because of you I cleared interview of L&T as this was my final question.

deepakjava

Hi ma'am it's awesome explain
Please continues for more videos

mdumarreza

MISTAKE at 6:06, 2 power 5 is not 36. it should be 32.

anurag

Thanks a lot for explaining HashMap indepth working in very simple manner...

macherladevasundaram

Helpful :) Thank you ma'am. One question:
1. How does it work in case of LinkedHashMap?

AadityaKavthekar

explained very well .. impressed!!
thanks for the video

sekhar

Great explanation. Thank you. Could you please upload a video on the same with example showing the same in debug mode.

bibhachaurasia

You doing the Great Job ma'am but will u please upload the not only Hash Map Implementation include all the collection interface implementation classes bcz most of tutorial already explain nothing is difference but no one upload the all the internal so please keep continue Ma'am !!Thank's for The Advance and include the jdk 8 also enhancement then obviously ur subscriber cross the many more best wishes :)

pratapsingh-lebr

Great explanation. I could grasp it in one go. A little doubt- while getting the Hash values, suppose France is at index 9. So, while searching for France, is the index from 0 to 9 traversed first and then the internal comparison takes place? And is this traversal the same as in an Array list?

fitnaariindia

which sorting technique/algorithm is implemented in hashmap??

priyankawagh

when there is collision then we compare the key with equals not hashcode right

arijitabose

Say, there is a bucket X and its capacity has reached TREEIFY_THRESHOLD i.e., 8, but MIN_TREEFIY_CAPACITY is not yet reached, say MIN_TREEFIY_CAPACITY is still 16. Then the Linked List structure in bucket X will not be converted to Balanced Binary Tree as MIN_TREEFIY_CAPACITY is not yet reached. Instead number of buckets is doubled. So now, our MIN_TREEFIY_CAPACITY becomes 16+16=32. Say now we again try to add a value to hashmap which hash's to bucket X, then will the bucket X continue to store the values in a Linked List fashion as MIN_TREEFIY_CAPACITY is still not reached ?

TheBatterHalf

Can you explain ConcurentHashMap also and compare it with HashMap?

basavaraj

2^5 = 36 ? Can you please update your slide with correct info

SurajKumar-kboc

How to calculate the index using hashcode???

yoshitamahajan

how to calculate hashcode and index value ..please help with example to get out of this one, ,,,

talarisaideekshit

I need with one example with explanation mam not only theory mam

rameshc

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