Java 8 STREAMS Tutorial

Functional programming in Java: tutorial on how to use Java 8 Streams filter, map, sort, reduce and collect functions. Lambda functions explained through examples, with Java code.
=======CONTENTS=======
0:00 Intro to Streams
3:42 ex1: simple int stream
4:53 ex2: int stream, skip
5:40 ex3: int stream, sum
6:15 ex4: stream.of, sorted, findFirst
7:03 ex5: stream from array, sort, filter
7:57 ex6: map, average
8:50 ex7: stream from list, map, filter
10:00 ex8: stream from text file, sorted, filter, forEach
11:05 ex9: text file, filter, collect
12:04 ex10: stream from csv file, map, filter, count
13:43 ex11: csv, map, filter, forEach
14:51 ex12: csv, filter, collect to hashmap
15:52 ex13: int stream, reduce to sum
17:02 ex14: int stream, reduce to summaryStatistics
Twitter: / joejamesusa
Code on GitHub: github.com/joeyajames/Java/tr...
Subscribe: bit.ly/like-this-channel
Thank me on Patreon: / joeyajames
#java
@DaretoExplore

[@iOnlySay]

3:46 IntStream, Range, forEach, Print 4:55 skip 5:43 sum 6:25 steam.of , sorted, findFirst, ifPresent 7:05 stream of Array, sort, filter 8:00 average, map, ifPresent 8:56 Stream from List, map, filter, foreach, print 10:02 Streams from Text file, sort, filter, print, close 11:08 Streams from Text file, filter, collect 12:07 Stream from CSV file, map, filter, count 13:46 CSV, map, filter 15:56 reduce 17:03 summaryStatistics

[@The8merp]

Hey Joe, if you copy paste these timestamps in the video description KZbin will auto add sections to the video, could be helpful

[@pascalgu6771]

This is actually better than some of the paid courses on pluralsight. Keep up the execelent work!!

[@kevinjad4506]

No pluralsight(s) were harmed in this comment

[@seniorhackersgaming8062]

yes

[@rishabhjain8319]

I was taking course there and jump back here :P

[@sanjeevkumar-fk3fn]

@@kevinjad4506 77777777777777777777777777777777777777777777777777777777777777777777777?7777777777777?7777777777777777777777777777777!(

[@gerdsfargen6687]

Spot on. This video...the instructor...excellent.

[@atrantech11]

This was infinitely helpful. I love how you gave so many examples. Thus, allowing me to understand and play around with these examples. Best stream tutorial and will come back to it later as refreshers.

[@gerdsfargen6687]

Easily one of, if not THE best tutorial on Streams for Java 8. I still come back to this when I've not coded in a while after a hiatus. It's so good! Was confounded by the range of Streams functions when starting out in Java 8. Im absolutely zooming through them now and much more confident to create my own. Thank you so much, Joe!

[@avinpaladugu]

Fantastic. Crystal clear and no nonsense class.

[@tobyzhan7729]

Simple, rich and elegant. Love this tutorial!

[@Nothoughtinvolved]

Only time I've seen Java 8 streams explained clearly online. Thank you Joe

[@siphesihlesithungu2356]

Simple. Easy to follow. Straight to the point. Basically the most descriptive video I have seen so far on Java streams. Thank you so much.

[@luiscortes6563]

Great video! Loving streams already!

[@810612381]

Intensive and clear, great value for each minute watched on this video

[@punyabrotad]

excellent tutorial...exactly what is needed for java developers upgrading to functional programming.

[@apfelll]

Thank you for the very good tutorial. It's well explained and straight forward, exactly what I was looking for!

[@Pontification]

This is one of the most useful techniques in Java Ive ever seen.

[@ensoniq2k]

This is such a mind blowing feature, thank you very much for explaining in such detail!

[@rkulk]

Excellent work Joe, thank you for explaining this with easy to understand examples.

[@netindu]

A one-stop place for Streams. Excellent video. Great Job Joe !

[@diodorsaydofmi3504]

I'm a simple man I see Arijit's name (12:00), My day is made ☺

[@skyFullOfStars]

I wonder how Joe knows Arijit Singh! 🤔

[@prathyusha252]

Wonderful explanation Joe. Thanks for the tutorial!

[@grzesieknowosad1568]

Hey. I would like to emphasize that this tutorial for Java 8 streams is really great. I've been looking through internet for some good explanation. Found many sites or tutorials, but this one is best quality step-by-step. I found everything that I needed from the beginning. Thanks

[@sgtdutra]

Great great!!!! Excellent explanation... thank you very much. It was exactly what i need.

[@chrisbessant3315]

A great video - small and simple examples that get the message across clearly. Thank you.

[@dianadutka5764]

love how it was simply straight to the point!

[@nabinrai749]

this type of tutorial covers more topics and condition than others typing n explaining the course

[@fc6827]

This makes map very easy to understand. God all this time I thought it had something to do with hashmaps, KV pairs etc...this really helps, ty!

[@user-qz8cu3li4z]

This is the best video to explain Java collection I've seen in KZbin. Thank you!

[@anjalisajeev]

I have watched several videos on this, and this was the best! Helped me understand the concept.

[@erdoaNNN]

Great video, Joe! Thanks for the efforts and continue shooting videos like this please.

[@eternalwanderer6057]

Just commenting to say thanks, Joe. This was a VERY helpful tutorial. THANK YOU!

[@Ajinkya20061989]

Great explanation. Really helped understanding the concepts. Thanks for sharing the knowledge!

[@suriyaprakhash]

U nailed it. Short crisp and clear. Appreciate your work👍

[@DerSpudi]

Awesome! I wasn't comfortable with streams before, but after this video I immediately changed three for loops of my program to streams. Looks so much nicer and is not so tedious to code. Thanks!

[@teminoah2960]

Exactly,same for me too, I also now enjoy using streams

[@gerdsfargen6687]

@@teminoah2960 They just cut down on so much bulk code and make Java more of a joy to work with!

[@pritampatil435]

Excellent. Best tutorial on java stream came across.

[@ashu47202]

REALLY NICE EXAMPLES explaining various usage options of Streams API. Thank you !!!

[@suseelkumarannamraju]

I got a hands-on on streams a bit more than before. Thanks for making this video Joe.

[@mustapharaimilawal8053]

Wow, this is so insightful, concise introduction to streams api. This is so easy to follow, thanks a lot sir.

[@oggiai]

You are most welcome

[@Romanov1309]

I haven't touched Java in a while and now it looks like magic to me. Your explanation though made it understandable, thank so much!

[@oldapolda3567]

The Best Explaination i have ever seen about java streams. Thank You So much.

[@AnasMughal]

Very concise and focused presentation. I appreciate that.

[@ashethebostonterrier4918]

Very good explanation including using stream, array, map, collectors and lambda. Thanks. I have learned a lot. Very short implementation, but got lots done. I never would have thought using map, filter like in JS in Java. You can see how long I haven’t touched the Java. I need to prepare for interviews in their future. This helped me. Always nice learning something new.

[@redbridgesoftware6394]

thank you, Joe this is an excellent tutorial

[@gongjiaji2489]

Thank you so much Joe, my lecturer can't explain this simple feature in 2 hours, you did it in 20mins. seriously You should teach in our uni.

[@normdeplume6315]

sad but true. Great video

[@mafakka2]

have you dropped from uni already?

[@Hufsa]

Really good tutorial, I have used streams but I wasn't sure of some concepts, now it's clear, thanks a lot!

[@sehajpreetsingh4177]

No nonsense explanation. Thank you very much.

[@Somerandomnessvvv]

Streams are saving a punch of blocks of code, this is really helpful. Great explanation.

[@khalidqureshi6359]

Very informative with very clear and concise explanation.

[@JobinJacobKavalam]

Great presentation ... plain and simple ... that is what we want, almost always.

[@nimbostratue]

Thank you Joe for this excellent tutorial which is probably better than most of the ones out there.

[@SauravSarangi00]

You sir... are a gem!!

[@salmanbaig8088]

Thank you so much. This is the best explanation I have seen so far with great examples.

[@richaarora1775]

Great explanation on Java Streams. Cleared the basic concepts of using Stream API.

[@JERILNADAR]

Super tutorial. Made me go from hating Streams to loving it.

[@josephfernando4867]

This was indeed extremely helpful , thanks for sharing

[@pslamba]

Kudos for making your example data so culturally diverse!

[@oggiai]

I try to match my diverse viewers.

[@afifkhaja]

Fantastic. Although it took my 40 min to write out, run, and understand the code, it was well worth it

[@abail7010]

Wow Java is actually much better when it comes to file handling than expected! Great video, thanks!!

[@teminoah2960]

Joe James is a great teacher and a great mentor,I must affirm . How I wish have known him in my early days of programming.

[@dev-skills]

Very good collection of Stream examples, Learning about Files and IntSummaryStatistics was a bonus.

[@venkatbollimuntha178]

Excellent!! Clear & Concise . Thanks so much.

[@saravanant7283]

One of the best Java 8 content in youtube.

[@oggiai]

Thanks. :-)

[@deepap2068]

Your videos are awesome. Thanks Joe. Also, It would be great if you could group your videos into playlists like Java, Streams, machine learning paths, etc. It’s kind of difficult to get hold of the whole series.

[@AkimMoh]

THANK YOU I MISSED "x.contains()" NOW I KNOW HOW TO FILTER STRING

[@jakovkusic4219]

By far the best video about streams on the Internet

[@GabrielTobing]

Hey dude, thanks so much for making this video. I never knew the Stream API was a thing, and thought it was hard. After you gave those examples and all, I know understand it. This seems to be a really useful API indeed and can't wait to use it, not only that, but it seems much easier.

[@puneetkocher3370]

Superb video, i have seen many videos but didn’t find any other video giving this much of examples

[@abhaydixit499]

best video on Stream.....thank you so much

[@nramca]

Very well structured ! Thank you for uploading

[@lexplay85]

Just awesome! Very practical, very simple. I only need to practice. Thanks man!!!!

[@lazben1267]

Ciao Joe, Thank you very much for your valued mini course! Merry Christmas!

[@oggiai]

Thanks. You too my friend.

[@chaoticcosal2770]

Very clear cut programming, Thanks Joe for the collection of questions and solution.

[@vikingofengland]

Short and concise, good job.

[@karttikmishra4291]

How did this video get dislikes? What did the audience want from the video? I just loved the clarity of explanation and the ease with which he does that.

[@BalamuruganMCA]

Nice. Very Wonderful tutor video on java 8 streams.

[@arthurezeagbo3986]

Thank you so much for this content. You made everything simple.

[@ayasswain]

Wonderful explanation about Java streams. Thank you very much.

[@glnarayan565]

Very neat explanation with example Joe!

[@carbonateddippingjam4970]

THIS IS THE VIDEO I WAS LOOKING FOR. Thank you.

[@ginopeduto4264]

thx a lot - nice overview and well explained!

[@marcinkolenda2344]

Great quickstart guide.

[@ManishYadav-mt6zt]

This is short precise and gives all the valuable information. Thank You so much for the nice video!

[@javacoder60]

Beautiful work, sir! Very nicely explained!!

[@semilife]

Effortless discussion of a wide variety of stream operations examples. Very good collection of useful examples, to use a guide and a reference.

[@shahradabghari176]

best video about stream that i have found

[@vikasjain5466]

Best Streams Tutorial out there

[@kirankumarmothukuri8744]

Thank you very much James. It's very good demonstration. Keep it up.

[@pigeon1542]

spot on tutorial, thanks for the introduction into streams, have a nice day.

[@yogeshchaudhari9971]

Amazing explanation... short n simple and direct to the point

[@javadmahdiyoun5552]

دمت گرم با این آموزش خوبت ، ایولا Thanks for this high quality teaching, keep going

[@lokmanboukhoulda4496]

Wow great explanation, thanks Joe!

[@Momo-qr3rd]

Finally I am understanding this topic! Thank you very much

[@rafdnaah6078]

Excellent tutorial. I didn't know this exist in java. Loving it. Looks like Java is expanding its wings in the data science world.

[@WHYCANTIFINDMYMONEY]

Gr8 insight

[@dontknow6356]

Best tutorial i have ever seen

[@Shulkerkiste]

This is a great tutorial! Thank you! :)

[@anwardarkazanli7160]

Very thorough explanation, thanks a lot!

[@ranachan5555]

Joe, Great explanation , Covered many but not more like parallel streams and all.

[@nicolasfeuchster8160]

Great video. Thank you for all of the information! =)

[@arthastfp]

I'd like to point out something about example 7. You said it's better to first filter the stream, and then apply mappers. But you are first mapping the original dataset to a new lowercased dataset, therefore iterating through all the info, which in cases of massive amounts of data will slow down the application. The optimal solution is to first filter the stream, and then lowercase the remaining items. The same goes for example 8. This is just a nitpick on a great course overall, and I thank you for posting it!

[@oggiai]

Yes, you are right.

[@changhaizhu7854]

Very nice Tutorial. Thanks a lot, Joe

[@gamerauto]

Man this is really beautifully explained, I really love this video, and thanks for including Arijit Singh, love from India 🇮🇳

[@tewodrosadmassu8846]

Love it, thanks Joe!!!

[@jasonzhang1133]

Thank you so much for such a nice video explaining the stream concept very well.