Collection Framework - Collection interface details

[@jonassteinberg3779]

Namaste from America! Your videos are very clear and concise. You clearly have a deep understanding of OOP.

[@dwelve-dare]

Namaste!! Jonas.. Thanks on behalf of Durga sir. I appreciate your recognition.

[@gunjanrai9181]

Classroom example is not correctRun this: public class CollectionBasics1 { public static void main (String[] args){ Collection value = new ArrayList();value.add(1);value.add(2);value.add(2);value.add("Welcome"); for(Object x : value){System.out.println("value: " + x.toString() + " ");} Collection value2 = new HashSet();value2.add(1);value2.add(2);value2.add(2);value2.add("Collection Framework"); for(Object y : value2){System.out.println("value2: " + y.toString() + "\t");} System.out.println(" //add(), addAll(), remove(), removeAll(), clear(), retainAll()"); Collection value3 = new HashSet();value3.add(3);value3.add(4);value3.add("Gunjan");value3.add("Rai"); value3.add(value2); value3.addAll(value2); value3.addAll(value); value3.add(value); //value3.remove(value); value3.removeAll(value); //value3.retainAll(value); for(Object y : value3){System.out.println("value3: " + y.toString() + "\t");} } }

[@kumarsantoshdash]

Went through several books and other training videos. But could never say that I understood the Collection framework well. Sir, you have done an excellent job explaining the details. I am not done will all sessions but could not stop myself appreciating your knowledge and teaching skills.

[@RjDBIIPL]

I got more knowledge from your end durga sir, heart of java

[@RjDBIIPL]

❤

[@shrivathsagkumar]

LOOK AT THISAAAAA . is an emotion .. he uses very often when teaching

[@jvsnyc]

These are actually quite good. The grand plan was that the early ones show the taxonomy or relationships of the whole hierarchy of different Collection and Map interface types, and intentionally don't go into detail about exactly how to work with each one. There are a couple of places one might want to add a sentence or two about why some of the weird ones exist and when you would actually use them, but pretty good. The later videos of the 42 then come down into details about how to actually make use of the methods on them. It was clear from the comments that not everyone got this when first watching, as people would ask for more detailed examples of how to use them. With the exception of the maps, which might have been accidentally omitted, they are all coming now in the later parts of the playlist.

[@rupeshdubey6461]

Sir, you have great teaching method. Huge repect for you. Thank you for your videos

[@MufasaToday]

You are so perfect to be honest.

[@surabhisahu9541]

In last screen Collection Interface should be written in place of Collection Class. Awesome video's thanks for making our lives easy.

[@shindeprem228]

I was going to post the same 😄

[@sahyadritech6125]

Hi sir, There is just small mistake in notes at 10:50 You have written Collection Class insted on Collection interface by mistake. Thanks for the worderful tutorial

[@janjanamvenkatesh7897]

excellent teaching ...................................

[@harshpatel6952]

sir you are doing wonderful job, thanks alot sir.......!!!!

[@jaydeepkumarpal2334]

you are amazing sir.. please keep helping us

[@firojsiddiki2207]

Mind blowing...very clear explanation..salute _/|_

[@susantaghosh504]

Thank You very much Durga Sir.Please upload video on internal working of hashMap

[@DurgaSoftwareSolutions]

Susanta Ghosh View 42 videos on Collections in Java, kzbin.info/www/bejne/qHqWh55_qahjm6M View 5 videos on JSF, kzbin.info/www/bejne/qHLEYqqtjLGqZ7s View 50 videos on Oracle, kzbin.info/www/bejne/pomYiH2ZqdNmgdk View 35 videos on Hibernate, kzbin.info/www/bejne/iYubkpWHaNugmsU View 115 videos on Data Structures, kzbin.info/www/bejne/pXKkmnWHe7h4n80 View 58 videos on Struts, kzbin.info/www/bejne/pIrUpKGofaymh8k View 74 videos on Spring, kzbin.info/www/bejne/j6HWd4drZdKnntU View 41 videos on CRT, kzbin.info/www/bejne/nHW1n36GrtuFZ5Y View 12 videos on JAVA Reflections API & Annotations kzbin.info/www/bejne/eKmmqGOrid2NiNU View 39 videos on Java Real Time Project Implementation on Spring,Struts & Hibernate, kzbin.info/www/bejne/n3zRk2N3nLCNgJI

[@susantaghosh504]

Thank you sir

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[@rishisharma5935]

You teach well.

[@jsverma143]

I LIKE UR LECTURES VRY MUCH THANK U SIR

[@anikethdeshpande8336]

Thank you! You are the best

[@tapanjeetroy8266]

Thanks for uploading it

[@kamalesh1187]

Good Material....Please upload for MAP interface as well

[@rumanir]

Awesome 👏✊👍

[@karimshaikh3900]

Very easy to understand.

[@onceajordan]

when will videos on MAP and it's subtypes, differences be available?

[@nagkala3853]

good videos easy way to understand thank u sir

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[@punnamkarthik415]

hi Durga sir you videos are excellent. please can you upload some more video on map interface and queue . thank you

[@DurgaSoftwareSolutions]

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[@sagarsingh6917]

Really Awesome Sir...

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[@souticksamanta2981]

completed

[@yashureddy5359]

Sir in place of get() , there is a iterater is there . That is also to retrieve the object , then what is the difference between get() and iterator

[@vijaynaidu754]

Watching in 2022 🎉👍

[@SaurabhDube195]

great videos sir..keep it up..

[@DurgaSoftwareSolutions]

Saurabh Dube View 42 videos on Collections in Java, kzbin.info/www/bejne/qHqWh55_qahjm6M View 5 videos on JSF, kzbin.info/www/bejne/qHLEYqqtjLGqZ7s View 50 videos on Oracle, kzbin.info/www/bejne/pomYiH2ZqdNmgdk View 35 videos on Hibernate, kzbin.info/www/bejne/iYubkpWHaNugmsU View 115 videos on Data Structures, kzbin.info/www/bejne/pXKkmnWHe7h4n80 View 58 videos on Struts, kzbin.info/www/bejne/pIrUpKGofaymh8k View 74 videos on Spring, kzbin.info/www/bejne/j6HWd4drZdKnntU View 41 videos on CRT, kzbin.info/www/bejne/nHW1n36GrtuFZ5Y View 12 videos on JAVA Reflections API & Annotations kzbin.info/www/bejne/eKmmqGOrid2NiNU View 39 videos on Java Real Time Project Implementation on Spring,Struts & Hibernate, kzbin.info/www/bejne/n3zRk2N3nLCNgJI View other videos on ADV JAVA kzbin.info/www/bejne/bmTNfaSKdsekh7c View 9 videos on ENUM, kzbin.info/www/bejne/imLJfoqtfp53Z6c View 16 videos on Serialization, kzbin.info/www/bejne/mHrdl6Wsmdlqp68

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[@rhydhamjoshi1960]

Nice explanation....Awesome! :)

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Hi Joshi. Thank you very much for your feedback

[@binayakgshankar9188]

Sir, You are God !

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Hi Choudhary. Thank you very much for your feedback

[@shrikanthsaakre1101]

Funny Accent(No regrets), But Knowledge Wise Excellent :)

[@mostwanted6673]

sir, u said that iterator() method is used to get the object one by one .. and again in the end u gave a note that collections dont have any method to retrieve objects quite confused with ur statements pls clarify my doubt thank you

[@PaddlingDuckInc]

Because the Collection has to be flexible enough to subclass from. To retrieve an object, you to somehow pinpoint/index which object you want. Not all collections have the same indexing methods. (ArrayList indexed with integer position, HashMap indexed wtih key object). Some collections don't even allow retreiving any arbitrary object (Queue, Stack). You have the iterator method however, which allows you to visit all the items in a collection. If you must retreive any arbitrary object and only that object, Collection may not be the best interface to write your code against. Maybe you need something more specific to your use-case

[@PraveenKumar-uj2ih]

@@PaddlingDuckInc Thanks Bro

[@RameshMavuluri]

I think we have to change the final note statement i.e., no concrete class which implements collection interface directly.(instead of class)

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[@ckudalkar]

Superb

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ckudalkar Hi, We are very Happy to say Our Expert Faculty Durga Sir's One-to-One Video Sessions on "Core Java with SCJP/OCJP" are available. Shooted from direct Class Room. YOu can access these videos from anywhere anytime. Around 200+ hours training, 178 Videos with clear explanation on every concept. 100% Satisfaction and Perfection in Subject guaranteed. For Demo Sessions Please call or drop a mail to us... DURGASOFT Online Training ph: 91-8885252627 mail :[e-mail], [e-mail] Demo Sessions on youtube: 1. Language Fundamentals(16 Videos)kzbin.info/www/bejne/m4W7lWtvqZ2hnas 2. Operators & Assignments(7 Videos)kzbin.info/www/bejne/Z3uqgIOeft6bd68 3. Flow Control(6 Videos)kzbin.info/www/bejne/jmfVhGyseZ5gp68 durgasoft.com durgasoftonlinetraining.com facebook.com/durgasoftware durgajobs.com facebook.com/durgajobsinfo

[@ckudalkar]

Wonderfull

[@lpy4150]

Sir but iterator( ) methods retrives objects na.....? How collection does not contain any method for retriving objects? Please clear my doubt....

[@MrKellindill]

боже какая харизма!!!

[@vaibhavphutane286]

excellent

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[@aftab-78601]

Sir,why using Boolean with most methods

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[@jawaharlalloungani5269]

Super Cool

[@manojbabu999]

This videos are helpful :)

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[@Poradadham_Poyedhemundi]

Thankyou

[@anjurawat9274]

sir how this is possible to define any method in Collection interface ?

[@yashureddy5359]

Sir in place of get() , there is a iterater is there . That is also to retrieve the object , then what is the difference between get() and iterator