Java Interview Question - How HashMap works internally?
Hello Everyone!
Hope this video is useful for your Interview preparation.
Introduction and key points - 0:00
1) Hashing technique - 3:32
2) Array of nodes & linkedlist - 3:53
3) Node representation - 4:13
4) Initial capacity, load factor & threshold - 5:04
5) put and get operations - 7:16
6) NULL key - The NULL key is allowed in the hashmap and it's index will always be 0. So it's node will be stored in the index 0.
7) hashCode collision - 10:34
8) Duplicate key - 12:05
9) Different constructors - 14:51
Reference:
https://www.geeksforgeeks.org/java-ut...
https://www.geeksforgeeks.org/interna...
The video is little lengthier. Will try to upload the upcoming videos with less time :)
#comeletslearn #learnintamil #hashmap #interviewquestions #java #javainterviewquestions
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