Java 8 Streams | map () & flatMap() Example | JavaTechie

This tutorial will guide you How & when to use map() and faltMap() method in java8 stream
#javatechie #java8 #Stream
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[@samarthurs8000]

Thanks for making it look so simple. Key take away: If the parameter in the stream returns a Scalar(eg: customer.getEmail() single email id) then use Map. If the parameter returns a Vector(eg: customer.getPhoneNumbers(), customer.getProductsOrdered() which returns a list) then use FlatMap. Stream of Stream for FlatMap is one more key point to note...

[@KrishnaDhakate]

Thanks, man, your explanation is short and sweet without wasting time.

[@nishantkumar3516]

I was unable to understand flatMap() until this video. Thank you so much Sir, your videos truly helps.

[@dineshkumar-lf2vk]

I watched multiple videos on this topic. But you are really very nice in explaining the things deeply with clear and right example. Thanks brother

[@vik6330]

Awesome explanation sir, Great❤

[@girmahagos8540]

SIMPLY and PPRECISLY explained!! Big Love for your Time, Effort and Diligences!!

[@arjumansheikh5640]

For the first time i clearly understood flatmap(). Thanks a lot.

[@nitinjirawal]

everywhere people have complex definition. this one not only explained well but with a good example too.

[@fc6827]

This is a great tutorial, and it really helped clarify things for me! One minor issue: I'm pretty sure the term is "Data Flattening" not "Data Flattering" (though to be fair, data is not complemented nearly enough!)

[@abhinavmishra9690]

All doubts got cleared for differences between map and flatMap operations of stream API. Thanks

[@maksymmelnyk8071]

Thanks a lot! 15 minutes and I got it very clear.

[@salmanbaig7746]

Excellent explanation in a very systematic way with good clear example.. Thank you

[@mohammadshahruk8017]

Every weekend I like to watch ur new videos keep posting

[@omprakashgupta2371]

Nice video

[@lulu6032]

You do it very well! Great explainations!! After this, all I understood is that decreasing object levels with flatmap to one level, gives a map!

[@niranjan9069]

Thanks bro, today I clearly understood when to use these concepts😊👍

[@vishwnathmpatil]

Great, simple and easy explaining the stream👍🏾

[@rishiraj2548]

The code example is quite comprehensive and useful. Great thanks!

[@VijayKumar-ie9xd]

Provided knowledge with simple example.

[@kundankumar-sn3fz]

I have seen lots of videos but didn't understand but after see your video I understand very well thanks bro and God bless you 🙏

[@subhrajitsatpathy3545]

One of the best youtube channel I have come across. Love your explanations.

[@nateivecode]

There's already SO many comments like this on this video, but I have to commend your ability to simply and clearly explain the topic. Showing an example that can implement both methods and even using the map on something you wanted to flatMap() to illustrate the need for the flatMap() method--such a good illustration. Sure you said flattering instead of flattening but that is such a miniscule detail. Your comments in your code were fantastic too as it made your verbal explanations even more clear. Much appreciated for this content, you just got a new subscriber!

[@Javatechie]

Thanks buddy for the sweet word 👌

[@neeraj91mathur]

Very clearly explained, this is what I was looking for. Thanks 👍

[@Rithus2020]

Thanks for the wonderful Explanation! Clear shot

[@gaurrahul619]

straight forward stunning explanation got concept easily.

[@davidl6797]

What a clear and practical explanation, thank u sir!

[@nausheenkhan5896]

Amazing video: Few Highlights : 1. Use map function when we can map one-to-one mapping, whereas flatmap is used for one to many mapping. 2. map provides mapping for single input, single value whereas flatmap provides mapping single input multiple values 3. flat map performs data transformation+flattening(flattening is the process of converting multiple lists of lists in stream to a single list by merging the values)

[@aeroabrar_31]

No, it follow many-to-one mapping. It converts many collections one single stream

[@lpnjp]

Excellent, finally understood. Thanks a TON.

[@divinity5250]

Awesome+Simple explanation!! Thanks a ton ❤️

[@sambhavjain6957]

Thanks for clearing the point

[@9851573327]

Great video. Hope to see all other Java8 related videos soon. 🙃😊

[@jpssasadara3624]

A clear explanation

[@sonicserenity9498]

Thank you, sir - really good that you provide code for reference ...

[@e.ch.vidyasagarkorada8937]

Thank you java tech guru, helping lot to understand the key concepts Jai hind

[@sagardarade]

Simple & Precise.. keep it up

[@sameer838]

Sir ur explanation is very simple and understanding every time.. Please keep doing it 🙏👏👏

[@palashkhatri7820]

Thank you , Its was really crystal clear explanation .

[@petroniobonavides3530]

This si the real TeachingTalent Instructor

[@tejaskhandare9270]

So concise and too the point.... Thanks a lot

[@felipedossantos7246]

Great content, pal!!!

[@sagarsri4143]

Superb 👌 explanation ✌️

[@sramkrishna4004]

i love this good example to illustrate the difference b/w map and flatmap() keep it up bro

[@manideepkumar959]

Thanks u told in very simpler way easily understood 😀

[@dineshraj9488]

Thanks for your wonderful explanation!!

[@PavanKumar-yj8fu]

Very good information, thank you very much

[@phanimc11211]

Thanks for making it look so simple.

[@prakrutijani4205]

What an explanation sir .. hats off

[@ashishgirolkar47]

GREAT EXPLAINATION ....Thanks SIR

[@sproutboot]

Good. I read so many times flatMap is map+flattering, but didnt really understand what flattering is. Thanks

[@testuser51463]

Nice and short explanation to the point

[@awadhtripathi674]

Really awesome 👍 please create more videos on java 8. Such real time experience.

[@varindersinghrehal5282]

Thank you so much. Best way to explain properly. Jai hind Ji

[@denosingh]

Helpful, thanks for the video.

[@ANKITCHOUDHARYankitkrchy]

Commendable job

[@shaikshafa1048]

Thanks sir...this topic is very helpful for interview purpose

[@TusharParekhtpar2014]

very nicely explained . Great work !!

[@sameerpatere2983]

Superb tutorial

[@pratishrutipanda6461]

Awesome video sir ji

[@ranjandas6046]

Always learning new concepts from here. Thank you. I am expecting an example of large project consist of multiple modules and one for authentication and authorisation.

[@Javatechie]

Thanks Ranjan , Please checkout my microservice playlist

[@navnitkumar7234]

very good explanation. I understood at one time

[@car_holic1995]

bhai best tutorial i have ever seen...love you.

[@ashishsahu1310]

Crystal clear explanation. Thanks for such a nice content.

[@Javatechie]

Thanks buddy 😊

[@vaijnathmagar]

Very good explanation 😊

[@solbonka]

good explanation! Thank you!

[@kandilakshmiprasana9776]

Way of explanation is very good

[@sharmarahul17]

Excellent explanation 👌

[@pushpal.r.1096]

Thank you Sir. Nicely explained.

[@Atul_Shegokar]

hi sir, hats of to you..... Thank you very much. very nice explanation. I read multiple article about map Vs flatMap, I could not understand but after watching your video I am very clear now. I can answer to interviewer very comfortably after watching this video.

[@Javatechie]

Awesome thanks Atul

[@sreddy8141]

Awesome 🙂

[@monojkarar1837]

Very nice explanation

[@azharmobeen]

Very well explained thanks 👍👍

[@rahulpant7795]

beautiful explanation. thankyou.

[@jagadeesht1763]

Great tutorial bro...👌👌👍👍 Keep posting new tutorial ...😀😀😀😀

[@itsmainakmukherjee]

You have got a new subscriber. That's all I can say. Great learning for me. 😊👍

[@aarthis6216]

Excellent explanation 🔥🔥

[@javamaster4069]

Good concept.

[@hkmehandiratta]

Thanks a lot for your efforts and putting this video.

[@jitendrapatil3276]

Thanks for the video. One to One and One to Many explanation was really really great.

[@MohammedAli-mc9xv]

Thank you sir. Very informative.

[@krishsuripaka1056]

Bayya ...Extraordinary Explanation. I don't have words...

[@Javatechie]

Thanks Krish 😊

[@ajayantony4412]

Thanks..expecting more tutorials on java 8 + features. I would really appreciate if you would take a competitive programming challenge and show us how to use java 8 + features to solve it.

[@Javatechie]

Sure we will do .

[@mohammadikram687]

It would be really interesting to leverage Java 8 to solve cp questions.

[@sepgh2216]

Great job. One note, for those of use that our OCD kicks in easily it will not be easy to watch the code comments being 2 tabs behind the rest of the code (6:32)

[@computeranalyst5737]

Great Video !!

[@mohammedshabbir1347]

Thanks for the nice explanation.

[@VivekYadav-jq6fv]

How come I missed so useful channel.

[@jskr456]

good one basant, wishing you more success with the channel

[@venkatasubbareddy.g2283]

U r great bro, 👍

[@jeevi639]

Great explanation!

[@suspicious_abies]

Very clear explanation 🔥👌🏻

[@aminesafi7261]

Nice explanation!

[@deeproy2719]

thanks basant short and crisp!

[@TheMksShow]

Super

[@rajeebpati9912]

Well explained. Thank u so much

[@kesavuluc9802]

You are my favorite techie bro!

[@pitchireddyb646]

Very clear explanation

[@rajendralella6956]

Excellent!! bro

[@channabasavav1823]

Thanks Java Techie 🙏🙏

[@prabhuldasds3518]

Good tutorial. Thank you.

[@karamjitsinghsehdev3451]

Nice Explanation.

[@sathishkumarr7106]

Good video 👍🏻