#9 - How to compare two #HashMaps in Java - By Key-Value, By Value and By Keys

In this video, I have explained How to compare two #HashMaps in Java - By Key-Value, By Value and By Keys.

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[SarangHoley]

This is one of the most likely asked question in the interview, thanks Naveen for the topic 👍😊

[wams]

Thanks a lot Naveen for your explanation. it's very interresting.

[riyarasanbhaire]

Really very nice explanation. Earlier I used to feel that Collections is too difficult for me. But now, you have made it very easy. Thanks a lot sir!!

[ankititp]

Thanks naveen, you are really saver . You deserve 1 million subscriber

[janetyang]

Thank you, sir! I prepared my interview by watching your videos. And now I get my desired job, I will still watch your videos to practice and learn.

[supriyassampath]

All collection series are jus amazing.. very easy to follow, how much tough it is you make us understand in a easy way, I can only say God bless you

[sureshgarine]

This is nice way of comparing maps using Java collection. Your thought process is really appreciated.

[shilpashravge]

Crisp explanation. Thanks for efforts Naveen !

[rajkumarm]

Doubt: at 4.58 minutes, you told that while comparing two hashmaps, map3.put(3, "D"); is ignored. However, in the hash map intro video, you told that the latest same key will be taken at put method. It's confusing me

[mdmazumder]

In the last two examples it should be other way around. ArrayList allows duplicate whereas HashSet doesn’t allow duplicates

[k.ravichandra]

Super 👌 👍 explanation, keep up good work Naveen bro

[YantrikiThepowerofMachinesPune]

In a client interview, I got a similar question, it was a json whose values they wanted to mask or remove, can we solve it by converting it into a java object and further creating a new set, please enlighten if any idea

[auvnphanikumar]

I have one doubt
while comparing maps by values when duplicates are not allowed using arraylist :
when duplicates are not allowed we have to use hashSet bt ur using ArrayList
can u plz ans.

[madhurpalsokar]

Thank you for the video. Very much appreciated.

[_bhaveshvirale]

thanku sir, thanku very much for great explanation.

[sushantijena]

last example should have other way around.ArrayList contains duplicates and set can not have duplicates.

[nudrac]

Thanks Naveen. Could you please give details around the benefits we get if we join your channel?

[MakeItStik]

When trying to find extra keys, in your implementation what if map1 has more number of keys than map4 including all the keys of map4. Your code will not give correct result since you removed all keys of map1 so there will be none left.

[shivaprasadgurram]

Hi Naveen, I think duplicates not allowed can be done by using HashSet and duplicates are allowed by using ArrayList. Please correct me If I'm wrong.

[safarshorts]

While comparing by values why map.values() method doesn't works?