Java 8 Language Capabilities, What's in it for you?

[@kidberetta]

who the fuck disliked this? .net developers?

[@АртемСергеев-п4ъ]

The speaker is a genius, I have watched countless java tutorials and never heard anyone explaining everything so clearly.

[@aslgomes]

I'm watching this talk for the second time. I wish I could "double like" it.

[@NareshKumar-do6zb]

i double liked your comment :P

[@Flamealchamist]

That's unliking it

[@rakeshmehra6321]

You can learn Core Java here : corejava.entirejava.com . I can give 81% off, message me

[@deependhamecha]

This was one of the best seminars I ever saw! Thank you! Atleast I'm not the only one excited for Java! :)

[@MangoAfFan]

I love talks by Venkat! Awesome teacher, keep them coming!!

[@bluestarz93]

This is where i started Java 8 and got interest. Great talk

[@blaster_pro]

Venkat is getting better and better on his presentations! Thanks for the fun and informative time!

[@gilshapir7935]

WOW! I loved it. Comprehensive, educating, informative, vivid, funny, well structure, well paced, clear language and audio. Who can ask for more?

[@sanjay005]

@34:33 Once you publish an interface, even the thought of changing it is evil and if you do go ahead and change an interface, you start receiving *death threats* from programmers . :D

[@lmb_codes]

this may sound racist...this guy is the best english speaking indian i've ever heard :D

[@sukantdash3761]

+Lyndon Michael Bibera I must say ....thats NOT correct ...

[@austininflorida]

He definitely has an Indian accent of some kind, but it sounds like he is speaking in an American dialect, not an Indian one.

[@hireme3864]

except paarameter..everything sounds perfect.

[@vinodbhadu4576]

You must listen shashi tahrur you will forget everyone else.

[@yahyafati]

You are a racist prick. But you are right. PRICK!

[@ssatguru]

Great presentation. Loved how he explained laziness of streams.

[@amanbains5474]

This is the best video I have seen for the Java 8 beginners!!!Apt for all Java lovers !!!Best line --> If the new interfaces are functional interfaces , before that do you think all of them were dis-functional interfaces!!!! lolzzz!!

[@Xehanort94Ger]

The point really is: Venkat is the best speaker ever!

[@TheGaneshutube]

He is consuming GigaWATTs of power where only a few KiloWatt would suffice ... Good Talk !

[@ko-Daegu]

Ganesh Tiwari How???

[@camilohurtado3543]

This man is awesome explaining all topics. And as already someone said... best Indian english speaker!!

[@jeffreycohen1]

Terrific instructor - excellent presentation!

[@gautamdevkhanna4255]

29:25 Dad... That's what you do for living... ;> . awesome n that's says it all ... no wonder y I wd consider him one of the bestest tutor in Java I have come across ... mixing good humour n logically correct.. doesn't matter about sound effects as far as the content is rich n inspiring .. which is the case here.. Thanks for sharing 👍

[@syogamurthy]

can someone tell me how the result of a variable is being shown in the CLI before executing the code?

[@raghavanaliassaravananm1546]

He actually executes it through a shortcut in the TextMate IDE , but be doesn't tell explicitly;-)

[@s_bond]

Best java8 starter I came across. Thanks a lot.

[@silviucat]

Should have invested in Amazon stocks. It's grown from 331$ to 1571 $. Nice and funny presentation

[@pulkitmehra001]

simply amazing :) Lambda expressions are the gateway drugs streams are the real addition :P

[@KagamulMc]

+pulkit mehra addiction* :P

[@dharmachand]

What a fantastic presentation ! Kudos to Speaker: Venkat Subramaniam of Pivotal !!! It really drawn my complete attention to see the complete video/training.

[@decimuszx]

Excellent presentation! This is the best overview of Java 8 I've found. Thanks!

[@ashwinraja2213]

My god! Venkat, I am a fan of yours. Would be surprised if this could be done any better. Simple, crisp and extremely entertaining at the same time, while covering all the important topics. Wish I could do this with my presentations!

[@arunbhati101]

Great presentation with nice examples... Must watch for java guyz.

[@kosterix123]

21:09 first lambda expression 31:08 second lambda 37:30 the "x::y" construct which puzzles me.

[@shamrockfrost1856]

docs.oracle.com/javase/tutorial/java/javaOO/methodreferences.html

[@cperez1000]

x::y is a method reference. "x" is the instance, and "y" is the method, so rather than calling the method directly, you pass a reference to it. Also note that in 37:30 he's not actually using the construct as he wraps them in quotes, so it's just a string.

[@kosterix123]

isn;t that just object.method() ?

[@cperez1000]

remember that the equivalent argument to the consumer is the expression value -> System.out.println(value) and an equivalent to that is not just System.out.println(value), but the method reference, which is System.out::print If you just pass System.out.print(value) then you are not passing an argument that can be used and it won't even compile, for the same reason it won't compile for the previous versions of Java.

[@Xehanort94Ger]

If you have ever coded in C++ or C# the x::y construct are called function pointers (c++) or delegates (c#) there. They probably behave differently, but the general idea of identifying a method using an object (c++ pointers are no objects, but there are function encapsulation objects in the newer versions of c++ if im not mistaken) is the same. Since you can pass these method references to stream methods, where the method signature matches the problem adresses by the stream method, it makes it really easy to only refactor the code that uses your other methods. That might be very confusing, but let me give you an example: public class Test { public String findFirstStringThatStartsWithA(List strings) { // This code right here for(String s : strings) { if(startsWithA(s)) { return s; } } // Can be refactored into this code, using the new Java 8 Stream API return strings.stream() .filter(Test::startsWithA) .findFirst() } public static boolean startsWithA(String s) { return s.matches("^A.*"); } } As you can see i could reuse my old static method that does the Regex checking in my refactored code, using a method reference that i passed into filter(). If you look into the docs, you will find, that filter() accepts a Predicate, which is a functional interface and can therefore be used by either subclassing Predicate (Venkat did this using a anonymous inner class), passing a lambda, that takes an element of your collection and returns a boolean, or passing a method reference that takes an element of your collection and returns a boolean. The beauty comes when chaining multiple of these filter/map/reduce/etc calls to work through a big set of data. It's way easier to read and therefore also easier to understand than your usual imperative code. Plus you get the benefit of being able to manage concurrency easier and even use that to speed up certain long running operations (if you have a map step that takes 30 minutes to complete you could run that concurrent). If this interests you here are some things you should do to fully understand the concept: - Look into the Java Docs, search for Stream and look at the different methods it provides (Going the Java route) - Use a functional programming language to get your head around functional programming style (Clojure runs on the JVM) - Use a programming language that is not purely functional, but provides you with built-in tools to crunch data like the Java Stream API (I know that Python does that really well. If you want to try it in Python look up Codewars, it's a website providing programming tasks and they also show you the solution of other users who often use filter/map/reduce quite brilliantly for most of these tasks) - Read up on MapReduce (It's a concept for handling a lot of data using concurrent map steps and non-concurrent reduce steps. There are MapReduce frameworks for every major Programming Language)

[@vercettigameplays]

Parrrrrrameter :)

[@hugo-g5r]

+Higor Oliveira rrrrrrrrrreferrrrrrrrrence

[@flipper71100]

fuuuuuck offfff

[@HoneyMalviya]

Its south Indian accent. this is like the best a south Indian could do. :D

[@judgewest2000]

Amongst Java developers how popular is lambda? It's been transforming in c#. Awesome vid

[@arunmurukesh2830]

Nice tutorial to start learning Java 8. Awesome energy through out the session sir..

[@nirmalbrj]

I wonder what edit is that? J8? I like the feature where he points at the end of the sysout statement and it shows the result (without running the code)...which editor is that, what's it called?

[@ishwarprajapati1304]

Nirmal Singh is With.

[@translate_Idea_2_code]

My god! Venkat, I am a fan of yours

[@yohanfernando3815]

One of the best talks highlighting the benefits of functional programming for folks from the imperative world.

[@BeatSyncBytes]

omg he is so funny rofl

[@idunnoc4602]

What a well presented and informative lecture. I will be looking for more of your videos!

[@nataliapamplona1401]

Fun and outstanding!, many thanks from Spain

[@kleffy]

someone please recommend other tutorials by this brother

[@raghavanaliassaravananm1546]

There are a lots .. search in Oracle, Spring Source etc where they publish his lectures and presentations..alternatively you can search for his videos on his name Venkat Subramaniam

[@UdaykumarReddy]

Java * Language Capabilities.... super presentation

[@alkesh3017]

one of best java coding presentation, I have seen so far. (Y)

[@ahmadkhalil9899]

wow, really great explanation!!

[@jaisudhakarmalla3327]

Awesome! Easily one of the best tutor videos i've watched till date. "Hey, I'm the domain expert, could you explain me what this code does? I'm trying to figure that out too." - Rofl, very true.

[@SuperUnic0rn]

Wow! Java is now starting to slowly approach other programming languages that are have been around for a decade.

[@SDilip012]

One of the best java 8 session. Mr. Venkat Subramaniam, you are a superb! techie.

[@venkatasreekanthbhagavatul6216]

What editor is he using?

[@DurgaswaroopPerla]

I think its Text mate.

[@anjaliarorafan6587]

Intellij

[@hansoloLDZ]

Too bad android doesn't support 8 yet. I hate writing these anonymous classes all the time

[@saviercoo]

The first time I watched a tutorial from start to end. Awesome!

[@saviercoo]

or talk!

[@doviche]

This guy got fantastic knowledge and abilities to explain complex concepts, nevertheless, it is really sad to hear some very poor remarks on this very smart person just because he is Indian. What a poor world!

[@ILyaCyclone]

Absolutely adorable session and I really enjoy the way of expression. ;)

[@yingnansong]

This is awesome! Thanks for sharing!

[@yadigarcaliskan6453]

Great work! Thanks a lot!

[@Alokkumar-me7pl]

to whosoever disliked dis lecture, i wud say , even if u r remotely or not into Java or say Programming, he is d guy whom u can admire for how to be passionate abt ur core domain share ur ideas.. great Learning

[@burakyildirim-nl]

this guy is cool but he is too excited about java 8 i guess, and he keeps shouting and screaming :) anyway, nice touches !

[@jwenting]

yes, sounds more like a religious rant by a recent convert than a well argumented discourse.

[@yanisleak3280]

may be good prof. but the way he explains doesn't let people love java and hate it so far. he is so agressive .so closed face.

[@RahulRoy-xt9cq]

can anyone tell me what editor he is using ?

[@cutelivelife]

Its is TextMate for Mac

[@frankhi8612]

important to learning English well...

[@EDENTREE0809]

BEST Lambda tutorial EVER!

[@BharCode09]

"Self inflicted wound" pattern!

[@sopya16]

Definition of interface is awesome... :)

[@meriembenmabrouk8249]

Amazing ,really helpful ! Thanks a lot !

[@dpworld3251]

What a fusion of South Indian & American accent :)

[@shabbirdawoodi9407]

Which IDE tool is used for demonstration?

[@Hammett849]

IDE also made to "vomit" stupid codes..LoL

[@InfoKuchKhaas]

wow... thanks your presentation is engaging.

[@amazingNV]

Loved this intro talk!

[@muralik5504]

Fantastically explained.

[@soki002]

Compiler does not create as many anonymous class as the following statement: values.forEach(value-> System.out.println(value)); it just creates only one class.

[@restondesi]

Well organized and funny presentation as usual by Venkat, love his style :). In the last example, I was thinking how easy / hard it would be to return the stock symbol having the max price, rather than the actual price, but it does not look possible using java 8 yet - unless we change the object model to pass tuple (ticker, price) down the stream.

[@SubhobrotoRoy]

excellent...very helpful...thank you Venkat Subramaniam for that outstanding explanation.

[@ReflectionOcean]

How can he make the IDE transparent?

[@Boyarsskiy]

I'm from 2020 and using streams for a long time, but this seminar is the best! Very sequential and explanation and not boring

[@Hipdudester]

He had me at "Java sucks" Java sucked but it has really really improved to the point of being the best practical language. It beat the out of C++.

[@GrimReaper-du5ou]

@56:25 you want a break?

[@nhanphanthanh5578]

a 'break in the code' ahaha

[@aprofromuk]

Venkat .... the boss :)

[@arifulla1988]

It's just amazing. He has explained all the basics with examples in such a short time. Wondering how could anyone dislike this video!

[@karthikkumar9279]

Excellent presentation and quite engaging with very effective communcation to learn about java 8 features.

[@tknuwan]

Very good video. But the speak is breathless trying to speak so fast continuously. I got a pain in my ear drums listening.

[@marioalbertoalvarezgarcia7923]

Impressive video. It's good for a starting point in lambas, and also you spend a good time learning due to all the fun it has. Is 1 and half hour that flies...

[@talk2niraj]

I am always looking forward for your video presentation. You express it so interestingly. The flow is awesome.

[@Amaira13]

Superb!!Fantastic !!

[@gauravbombatkar3456]

Great java 8 explained. Please share you used Short cut key. It is very helpful.

[@peterarseneault]

Looping through the arraylists sewuencially one element/threat ID at a time via hash time location bin bash

[@TomWulf]

Really excellent presentation.

[@cihanseven6227]

Exactly a masterpiece.. Thanks for the clear and concise explanation of the concepts..

[@bluedevilzn]

This was amazing!

[@redroutu]

Adding humor to the coding. Great explanation. Thank you Venkat.

[@DieselD_OnTheMic]

This guy is a natural speaker. I could listen all day to him read a legal disclaimer as long as he puts his special twist on it!

[@ramups8119]

I have been looking for 'crisp & precise' Java 8 capabilities and this is the one.

[@saamtech]

Why does he scream so much?? It's annoying listening to it on my headphones....

[@soumitripattnaik]

() -> System.out.println("HATS OFF !!!");

[@MichaDrzewiecki]

Most entertaining talk about java I have ever seen. Give it a try and you won't regret it. ;)

[@karthikeyann3123]

It's a good video to learn Java 8 Lamda and Stream. Thanks to Spring and Venkat.

[@MRHarsh985]

awesome explaination of jdk 8 advanced features

[@mariusbancila2702]

Hey guys. Anyone here that can help me learn java? thanks!

[@singh88manish]

presentation is good but you should not screem this much its annoying while hearing.

[@BurhanCerit]

+Manish Singh actually its funny tho

[@singh88manish]

Man I trying to listen to this guy putting my headphone it was so annoying he knows stuff but screams a lot.I had to hung the video otherwise was really interested in knowing this stuff.But preferred other sources.

[@codegeek8256]

hhaha yah i will agree he is busting the headphones...but you can watch videos of him he speaks better there...here i think the problem is the mic

[@extreamemotivation3834]

U can reduce your volume.

[@rwarren2007]

Great lecture. High energy. Thumbs up.

[@richJinny]

Yeah this guy always give good presentations.

[@Weckacore]

Man, I wish I could roll my "r"s. Sounds so much cooler

[@sumitbhattacharya1720]

epic, the parallel library just blew my mind.

[@jorgetovar621]

Nice explanation..., where I can get the code?

[@md.akidsultankhan5104]

excellent explanation.

[@puneetbhalla7331]

What IDE is being used to write the code?