HashSet (Collection Framework)

This Video explains Core Java - Collection Framework | HashSet. Training Tutorial delivered by our Trainer Durga Sir.

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Topic : HashSet
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[saifhaidri]

Durga Sir, one thing i will definitely comment, i have seen most of your collection videos  and the way you have explained the concepts with example on such tough topics collections made me very easy to understand. The way you explained conceptually every topics is amazing. Thank you so much sir. If possible please put one video on Hashcode() and equal method () importance and differences. I have seen others video on this topic but not at all clear.

[abhisheksarkar]

Hi Sir, HashSet will be heterogeneous only when we don't provide Generic with it. In that case ArrayList, LinkedList all can be heterogeneous if we don't use Generic. And using collection without generic in a project will lead to this warning "Type safety: The method add(Object) belongs to the raw type HashSet. References to generic type HashSet<E> should be parameterized".

[poornisridhar]

Sir thank you so much I am new to java ur explanations are very easy to understand. Even I saw lot of concepts but not understandable

[somdevbasu]

FOR QUICK OVERVIEW:(these are timestamps)
2:57
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[rohinimv]

Thank you 😊 so much Durga sir for uploading vedios. 🙏

[atulrulers]

Just a suggestion. Subtitle will help a lot.

[javascriptwar]

🙏😢Awesome sir ...
You make it easy..
❤no word to say ...

[sandeepkiran]

thanks sir for giving valuable classes @ free...

[DineshMallee]

Concept explanation is awesome. Thanks.
:)

[ananthagadi]

You are doing good sir, Please correct for people, who are following you. Underlining data structure is HashMap not Hashtable.

[rushikumarn]

hello sir, your classes are excellent but if u upload the remaining map and queue videos also it will be very beneficial for us

[sandromartins]

The accent was too strong, so had to pay very close attention on the english part, but the explanation was very good! Thanks.

[harendrayegr]

in the example of hashset , i have to use javac -xlint

[pavankumar]

Awesome Explanation ... Thanks a lot .... please let us know if you have anything in C# side or C++

[SaumyaSrivastava-shyh]

What is the underlying data structure of HashSet? I recall having read it as HashTable but now it's updated to hashMap. Was what we read earlier wrong?

[gauravsharma-ojdz]

Hi Sir,

Thanks for providing high-quality learning resources. You teach really well.

I have one question like in an ArrayList after 100% capacity reached new ArrayList is created, similarly, if we create a HashSet with an initial capacity of 10 when the new HashSet will get created i.e when inserting 8th element or after inserting 7th element.

[AshishPai]

What is the meaning of underlying datastructure for HashSet is hashtable?

[parasmani]

'null' insertion is not allowed in Hashtable but it is allowed in HashMap.

[last_theorem]

How does the the hash set extend there field. In the case of arraylist all the data is transferred to a newly formed big fields, what procedure is followed in the hashset.

[prajyotbhatkar]

I want to know Sir you are saying that new HashSet is created when 75% of 1st HashSet is filled but what is the size of new HashSet?? Is there any rule/formula to calculate size of new HashSet?