Java 8 STREAMS Tutorial

[@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.

[@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?

[@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!

[@nabinrai749]

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

[@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.

[@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!

[@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.

[@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! 🤔

[@Nothoughtinvolved]

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

[@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.

[@Pontification]

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

[@shankarghimire4492]

Wow! short but very powerful tutorial! You made Streams operations so easy to learn in Java. Except you, everybody starts their tutorial by saying 'Stream is the most difficult topic to learn and understand in Java'. But, you proved them wrong! Thanks a lot for sharing your knowledge with the world! Expect more tutorials especially on functional programming in Java in the same simple format. Cheers! :) :) :)

[@avinpaladugu]

Fantastic. Crystal clear and no nonsense class.

[@afifkhaja]

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

[@oldapolda3567]

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

[@suseelkumarannamraju]

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

[@javadmahdiyoun5552]

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

[@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.

[@Somerandomnessvvv]

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

[@pslamba]

Kudos for making your example data so culturally diverse!

[@oggiai]

I try to match my diverse viewers.

[@810612381]

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

[@fotoamgamgfoto3695]

Thanks! I quit using Java after 12 years of Java development around V1.4 a couple of years ago when Generics came into it and I hate Generics. I become a Frontend JS developer, but now need Java again as a fullstack to learn what new things come up and this Stream API looks cool, smilar to ES6 stuff! I might be interested in Java again.

[@쉐틀]

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

[@Anubis10110]

I really want to understand WHY PEOPL dislike it...They most properly envy HIM 1. Perfect English Accent 2. Perfect Explanation 3. Samples 4. Code What else do we need :D Thank you so mcuh

[@vladimirljubopytnov5193]

I guess because of errors? But I agree, its pleasant teaching overall.

[@moayadyaghi]

Is accent really the first priority?

[@JobinJacobKavalam]

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

[@gamerauto]

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

[@rkulk]

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

[@rajeshshrivastava3983]

Amazingly explained java8 stream,lambda use in just 18 min. Which is more awesome 😎

[@stevermadter8430]

5:18 System.out::print is the shortcut lambda expression for x -> System.out.print(x). Its Sytnax sugar, the compiler doesnt notice a diffrence

[@shubhampareek2378]

There's one point to note, you can only use static functions with `ClassName::functionName` format. Instance method have to be called using lambda.

[@sumitbabel5415]

@@shubhampareek2378 No not necessary, we can also call getters as well e.g (ClassName::getterMethod) - this will also call the public getter method, kindly let me know if you need a program also

[@ShoeibShargo]

Thank you for clarifying. I was confused why would he call print function like that. This lambda expression is making code unnecessarily complex for me.

[@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

[@AnasMughal]

Very concise and focused presentation. I appreciate that.

[@chrisbessant3315]

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

[@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.

[@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!

[@salmanbaig8088]

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

[@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.

[@anjalisajeev]

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

[@ensoniq2k]

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

[@tarun3kumar]

Very informative tutorial. btw 3:05 anyMatch() and findFirst() are terminal operations and do not return Stream.

[@SHSelect]

awesome, an easy understanding video for me to have a basic knowledge of Steam class

[@sehajpreetsingh4177]

No nonsense explanation. Thank you very much.

[@psonney]

Thank you. in example 9 , we do need to close the bands2 stream as well.

[@chaoticcosal2770]

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

[@JERILNADAR]

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

[@matt-g-recovers]

I usually do a like/dislike ratio assessment before committing time to a tutorial. Sheesh lot of folks liked this vs not right? ~100:1 well shoot if that doesn't seem like too much, it is an order of magnitude better than what I consider the gold standard for a good video ( 10:1 like to dislike). Great video :)

[@oggiai]

Thanks! I hope you added another like. :-) FYI, ratio for my whole channel is around 96-97% likes to 3 or 4 dislikes. This is one of my best videos.

[@AkimMoh]

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

[@dontknow6356]

Best tutorial i have ever seen

[@saravanant7283]

One of the best Java 8 content in youtube.

[@oggiai]

Thanks. :-)

[@balyaajiskan2194]

best one .. i ever watched..well explained... thanks

[@samkaxe2488]

Those are really powerful use In java 🤔 am thinking of going stright deep into streams

[@dianadutka5764]

love how it was simply straight to the point!

[@lexplay85]

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

[@richaarora1775]

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

[@exxzxxe]

Very well done, Mr. James.

[@oggiai]

Thanks

[@vikingofengland]

Short and concise, good job.

[@nimbostratue]

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

[@gsabella4]

Fantastic video on Streams, and really appreciate the content on your Java repo.

[@oggiai]

Great to hear!

[@69ayax]

the best explanation i've seen

[@erdoaNNN]

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

[@ranachan5555]

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

[@1991JBK]

Just a small correction to an otherwise great video. With filters you don't filter out based on the condition, you filter out elements that don't satisfy the condition and keep the ones that do. Was a little confusing on my first view through.

[@shubhankarseth]

Thank you Joe, the tutorial is very good.

[@uk7826]

Huge info in one video..thank you

[@yogeshchaudhari9971]

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

[@saurabhgupta607]

Helpful Video with great examples

[@apfelll]

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

[@masebor]

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

[@sibaprasadmohanty8322]

It's good to know the interview prospective and implement for logics also

[@anwardarkazanli7160]

Very thorough explanation, thanks a lot!

[@venkatbollimuntha178]

Excellent!! Clear & Concise . Thanks so much.

[@007chanakya4]

Excellent video, many thanks!

[@evgeniynorfolk5909]

Thanks for good and understandable examples! You are nice teacher!

[@SpoonOfSpices]

Excellent explanation..Thanks Joe

[@arthurezeagbo3986]

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

[@alexandre9051]

great video! even though it is 5 years old, it is still at very good starting point. Thank you

[@jasonzhang1133]

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

[@cvetkovicslobodan]

Good, but at 13:46 with two filter calls you are going through collection twice with no valid reason, a better approach is to group conditions with &&. So, it would be .filter(x -> x.length == 3 && Integer.parseInt(x[1]) > 15). If each condition is declared as a Predicate we could use and() method (e.g. .filter(predicate1.and(predicate2))

[@carbonateddippingjam4970]

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

[@prasadkailkeresridhar8316]

Super Awesome..thanks for the effort Joe.

[@lokmanboukhoulda4496]

Wow great explanation, thanks Joe!

[@notapplicable_ad]

Wonder how you know Arijit Singh☺️ but amazing tutorial. Even paid tutorials do not explore so many cases to explain stream the way you do.

[@satwikburman6841]

Amazing tutorial, that moment when I saw Arijit Singh's name in the band list was bizarre though haha!

[@oggiai]

LOL

[@josephfernando4867]

This was indeed extremely helpful , thanks for sharing

[@giaotran2018]

That was really clear. Thanks!

[@Ajinkya20061989]

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

[@prathameshwaghmare5846]

Thanks a lot for wonderful explanation.

[@nippleraisin]

Great examples. Thanks

[@safionweb]

12:03 Arijit Singh 💘💘💘💘💘💘

[@J-India24]

7:55 sarika 😂

[@anitawaghmare9113]

Excellent video!

[@mathisinav4267]

18 minutes well spent, excellent tutorial

[@nramca]

Very well structured ! Thank you for uploading

[@chowdhuryfarsadaurangzeb5080]

Very well explained. You used great examples.

[@DAS-2024]

can u please add breakpoints in the video description for each example, ur video is super helpful and it will be even more se....Thank you!

[@SunilKumar-yd8xv]

16:28 : You don't need to declare parameter types. Below would work double total = Stream.of(7.3, 1.5, 6.2, 7.9).reduce(0.0, (a, b) -> a + b);

[@ShoeibShargo]

Being a novice, this is confusing to me whenever I come across a variable which is not declared in a program. How would this line of code determines what a and b is? Is it a var type by default if we do not declare it explicitly?

[@pulkitbanta7374]

The way you explained every function was just awesome 😃. This small video made me more confident about Java, and thanks to you for making such an awesome video. But I am not clear about that reduce function with two doubles in it. Can you please explain it again? Like how the value is assigned to that double a? Hope, I will get my answer 😃

[@stunner1556]

Joe this is amazing content!!!!!

[@josephwong2832]

great video with great examples

[@javacoder60]

Beautiful work, sir! Very nicely explained!!

[@SpicyMemoriesByNeha]

Amazing Video Sir... very simple and easily understandable examples