Parallel Streams intro || Stream processing Interview Questions and Answers Java 8 | Code Decode

Parallel Streams intro || Stream processing Interview Questions and Answers Java 8
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Stream Processing -
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Collect -
If we want to collect elements of stream after filtering or mapping and add them to the required collection then use collect method.
Count -
If we want to count how many elements are there in collection that satisfy given condition then use collect method.
sorted -
If we want to sort elements inside a stream use this sorted() method.
We can sort based on default natural sorting order
If we want to sort using customized sorting order then use comparator.
Comparator
If we want to sort using customized sorting order then use comparator.
Min Max-
Min(Comparator) will return the minimum value based on the defined comparator
Max(Comparator) will return the maximum value based on the defined comparator
Foreach
forEach() is a method .
All methods that we saw till now returned something, like min max value, sorted collection, etc
This method does not return anything.
Rather This method takes lambda expression as argument and apply that lambda expression to each element present in that stream.
toArray-
of() -
Stream concept is not applicable just for the collections it’s also applicable for “ANY GROUP OF VALUE”.
Even for arrays you can use stream.
Stream . Of() this method can take any group of values and convert them to stream so that multiple stream operations can be applied to it.
Parallel Stream
Java Parallel Streams came into picture after java 1.8.
Its meant to utilize multiple cores of processor.
Till Now our java code has 1 stream of processing where it executes sequentially.
But when you use parallel streams, we divide code into multiple streams that executes parallely , on separate cores and final result is the outcome of individual cores outcomes combined.
Sequential VS Parallel Streams.
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#java8 #parallelStreamJava8 #Java8InterviewQuestion

[@abhishekrao3644]

To understand all these advanced concepts, anyone has to go thru tons of materials which involves a lot of effort and time. Thanks a ton for putting all your effort on KZbin. The way you explain things is brilliant and the quality is top-notch. Appreciate it! :)

[@CodeDecode]

Thanks for taking your time out and writing back to us Abhishek 👍👍. Much appreciated 👍👍

[@kajalsaini2283]

Really true ...the quality of presentation is to the top.

[@mayilesh1483]

Searching for parallel stream in code decode for more than 5 min and found that it is not uploaded yet 😅 that much addicted. Please post parallel stream i eagerly waiting

[@CodeDecode]

😅sorry for inconvenience Mayilesh, will post it soon. It's just that we are stuck with spring boot from Scratch playlist. Once done will quickly move to this topic 👍

[@pranayranjan5688]

@@CodeDecode Ma'am, is the video for parallel stream uploaded?

[@mayilesh1483]

Anyone can explain code this much easier from scarch i believe its you. I started watching your videos daily even its watched 😊keep doing ur good work💪

[@CodeDecode]

Thanks for encouraging us. Thats really nice of u to take ur time out just to let us know that we are on the right track. Thanks for the motivation. Much appreciated 🙏🙏

[@ShivamKumar-fr1rh]

Hello ma'am, you are doing a great job, the way you describe and give examples with code it becomes so easy to understand, and main thing is everyone here is because of your knowledge, you are not like most of the female creators using face cam video to attract viewers. You're awesome, keep creating content like this.

[@CodeDecode]

Thanks shivam 😊😊👍👍🙏🙏

[@digitallearning-29]

Ma'am you explained each and every topic in video very simple way and i really enjoyed the learning , all the very best to you, keep doing it. thank you

[@lokeshmuthukumar1284]

your video's very easy to understand mam, please continue with parallel stream. ❤

[@CodeDecode]

sure we will create it soon

[@thanipattavan]

Your dedication in explaining the features of promotion as well🎉🎉 greatt

[@subhashjha936]

Thanks for such great explanation. I am not able to find parallel stream video. Eagerly waiting for parallel stream video. Thank u in advance.

[@CodeDecode]

we wil upload it soon....

[@ankitsinghal8169]

Thank You so much so explaining the streams topic, now the sequential streams are well understood. Please give us more idea about parallel streams. Thanks

[@CodeDecode]

Sure Ankit👍🙂

[@shankardayal6928]

Great help madam. Map vs flatmap is very commonly asked java 8 question. Please include this also. Thanks

[@CodeDecode]

Sure we will do today in upcoming videos 👍👍

[@rishiraj7679]

Love your videos. Helps a lot. But only for this video, first 6 minutes was about code gym actually. 😅

[@CodeDecode]

We are really sorry for the inconvenience Rishi. Even we found it was really really long so we stopped taking any integration which is more than 1, 1.5 minutes. We know that people want to study and hence they are here. Again really sorry for this inconvenience Man

[@dastagirisha145]

Please cover complex problems in parallel stream so that will get more knowledge, and Thank-you so much for your videos it was very helpfull. Keep up the good work always.

[@CodeDecode]

Sure 👍👍

[@RishabhRawat_98]

Beautifully explained the streams and related concepts ✨. Thanks for all the hardwork 🙏.

[@CodeDecode]

Thanks Rishabh 👍🙂

[@maheshdarga387]

Yes.. please do further videos.. it's helps lot...

[@CodeDecode]

Sure 👍👍

[@akshayanishewale3225]

Thanks for such great explanation. Eagerly waiting for parallel stream.

[@CodeDecode]

Sure Akshayani we will upload it soon..

[@yoursarnk]

nice and easily explained. Eagerly waiting for the next videos on parallel streams. I think since it is single topic you can upload this video along with your Spring Boot Videos

[@CodeDecode]

That's a nice idea Arunava, we will create this one soon 👍👍

[@STUDYCELL1]

Great explanation Mam but I am confused in compareTo method..it's a part of comparable but you told comparator.Can you please explain.

[@veena618]

Thank you!! so much for a such perfect videos covering even single points. Request you to cover next part as well please.

[@CodeDecode]

sure veenu we will cover it soon.......

[@hrancati]

very clear! thanks!

[@CodeDecode]

you're welcome

[@SAK-y6j]

Excellent content

[@CodeDecode]

Thanks 🙂👍

[@SandeepAS-ov3fk]

thank you ...what abt parallels stream video?

[@CodeDecode]

Hi Sandeep videos are lined up we will upload it soon

[@nivedaravi2241]

good video. helping me for interviews.

[@CodeDecode]

M glad it helps. We hope you land at your dream job really soon 👍👍

[@nivedaravi2241]

@@CodeDecode hope your words come true. No light at the end of tunnel so far. Thanks a lot.

[@unemployedcse3514]

awesome ❤

[@harshadramekar]

Please cover how to reuse the stream as well as producer and consumer problem..

[@yoursarnk]

Sometimes we need to modularise our foreach loop in real time project, let's say a batch/job running. And within a foreach loop we need to call separate other method. Can we do same in case of foreach() method too in java8??

[@akshayzele554]

Please upload video with flatmap, springboot interceptors and load balancers

[@CodeDecode]

Sure 👍

[@niketdeore3236]

Thank you so much,it helps a lot

[@CodeDecode]

You are Welcome Niket...

[@tusharsonkar5208]

Content is no doubt very valuable and useful for interview perspective but here in sorted(o2.compareTo(o1)) we are using comparable but mistakenly you told Comparator.

[@krishnavamsi1824]

Sorted will take comparator as input function.

[@visukcse]

Hello madam, Though we can create stream object from collection, why java introduced stream.of(). Is there any particular reason?

[@CodeDecode]

What if you don't have collection still u need stream? Of is the way to convert any bunch of objects to stream 🙂👍

[@nishikantabehera2065]

Can you increase the font size of the code it is to small

[@CodeDecode]

Ok sure will do that from next video. 👍

[@priyankpatel6644]

Hey @codeDecode how can we typecast toArray() method

[@aswinikumarparida8074]

Please cover the problems of parallel streams in next part.

[@CodeDecode]

Ok sure 👍

[@sairakeshp]

I have watched too many videos on streams, but this one is the best explanation.

[@CodeDecode]

Thanks Pokala....

[@nitishchaudhary7777]

Thank you share knowledge. Please make vedio for parallel stream .. it's covered in this vedio.

[@CodeDecode]

Sure Nitish 🙂👍

[@ramadevivvs994]

See first time java8 listeners ur video is bit difficult,u should tell what is the parsm that accepts sorted and u explain detailedly

[@CodeDecode]

kzbin.info/aero/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy

[@manosij00roy]

I am very much interested to know more about parallel streaming and their real life use cases. With examples. You are too good binding a vast topic in a properly packaged and detailed manner. Wish to see the next video soon!

[@CodeDecode]

Sure we will create that soon........

[@priyankam8582]

Can I know how to remove duplicate character from a string using stream and lambda expression

[@CodeDecode]

kzbin.info/www/bejne/l5LSnH6mbZx7pcU

[@crazeeealgorithms3236]

Thank You so much, please upload problems with Parallel streams and further tutorials of parallel streams.

[@CodeDecode]

sure we will upload it soon

[@annaporna9644]

Nice Video, Could you please also make a video on most asked questions in microservices architecture.

[@CodeDecode]

Sure we will make it soon....

[@shubhamgoyal1968]

Are you sponsoring code gym??

[@boxofgames3]

Nice mam, your explanations are very understandable...

[@CodeDecode]

Thanks for the nice words

[@JainNamit]

yes we want video on problems and many examples of parallel streams.

[@CodeDecode]

Sure 👍

[@princearyan19]

mam comparator have compare method and compareTo method is of comparable i guess

[@CodeDecode]

Yep

[@AbhishekKumar-on8zm]

Mam compareTo() is of comparable interface and not comparator right? Just one clarification don't get me wrong.

[@CodeDecode]

Correct Abhishek. I might have slipped my tongue

[@AbhishekKumar-on8zm]

@@CodeDecode Everybody makes mistakes. Thanks for the confirmation mam.

[@DineshSharma-xi1lq]

you have 7-8 long ads on your video why would any one come to your video for gaining knowledge, so much of disturbance.

[@CodeDecode]

Apologies Dinesh. It's not intentional. KZbin adds these automatically. I will raise your concern with my KZbin manager. Thanks for bringing this issue to our notice 🙏🙏. We will see what can be done to avoid this. Apologize again from our side. But this is not in our hands.. We will try to upload these to udemy but all things there are paid. We can't keep things for free apart from KZbin.

[@CodeDecode]

True Dinesh but we don't want to charge people. We tried to put free but only 1.5 hours free content is allowed which doesn't make sense. We need more time to complete the topic. We feel knowledge is free and must not have a price tag associated with it.

[@lovebranch-hemavasanth]

is there any other video about the parallel streams , could't able to find the continue of this video

[@benjojoy6307]

The way you explained the concepts is very easy to understand. Thanks for the videos. One doubt, kzbin.info/www/bejne/maK0f2udadSFb5o in code, line number 23 uses stream() method, but line number 34 does not uses stream() method. Why, any particular reason for that ? or both will work similarly ?

[@sureshmamidur2201]

Hello madam, I started watching your core java 8 videos. The way you explained the concepts with live examples it's very easy to understand. Thanks for making the videos.

[@CodeDecode]

Thanks for your motivation Suresh. Means a lot to us 🙏

[@prathameshbodhale.2325]

Thank you mam for explaining in simple way. Your videos boost my confidence and clearing the concept. Hats off mam for taking effort for us.👏🙏

[@sagarikadevnath2716]

Thank You ...thank you so much for all your efforts

[@CodeDecode]

🙂🙂❤

[@yumraj12]

Hi, You are awesome while describing any thing with code, I am following this channel since long, Do we have a repos for this or all the videos you have?

[@CodeDecode]

Thanks 😊. We will check and upload to git 👍

[@kazaasekhar]

Unfortunately i have a chance to give one like otherwise i do it for one lakh times... i have seen many from this channel very very clear expalination and quality is too good. only i can do that started sharing in my office and friends group in way giving promotion to you...thanks a lot.

[@CodeDecode]

Thanks a lot for supporting us Sekhar 🙂 means a lot to us. Glad to have u on board 🙂👍

[@ravindrasiddavatam1097]

Very clear explanation. Appreciate it.

[@CodeDecode]

Thanks

[@monishad7040]

Haev you created any java 21 lectures un udemy ?. If so please share me the link. Your course are really awesome. ❤

[@nishiagarwal809]

I was total naïve in this topic and voila I have come to right video to learn Streams and crack the video interview . Thankyou for the informative video which made learning process smooth and enjoyable.

[@CodeDecode]

Many congratulations Nishi 👏👏👏👏👏well deserved Girl. Keep learning keep shining Nishi⭐✨⭐✨. Proud of you❤

[@sudheerg9182]

The videos in Core Java Frequently asked interview questions are not arranged properly , can you please check.

[@Vihaanhyperboy200]

Nice video on streams with good explanations and examples. I have used parallel streams in my project with batch size. I believe they take the maximum threads (no of cores in CPU-1). But I have one basic doubt, if one core is for one thread then a hexacore CPU can run only 7(8-1) threads at a time. Most importantly they are useful for synchronized processing like Reading a big file in chunks in parallel and produce the same output into another file in the same order. Hope you cover these in the next video of parallel streams.

[@mahendrachauhan6711]

I really really appreciate and thankful to you to keep is free... so much helpful for me and definitely gonna share it with geeky buddies...!

[@CodeDecode]

Thanks Mahendra 🙂👍

[@swathi1stjune]

Very informative, nice explanation, u have covered all the concepts in easily understandable manner. Tq u so much :)

[@CodeDecode]

Thanks swathi

[@TheRamanareddy]

Brilliant mam..you are awesome blossom.

[@CodeDecode]

❤❤😍😍😍thanks 🙂🙂

[@sahityakulkarni3508]

Very Informative. Appreciate your effort in this process. Could you please upload the videos of continuation topics.

[@CodeDecode]

kzbin.info/aero/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy

[@SushilKumar-qn1mm]

Please post for parallel stream problem video.

[@CodeDecode]

Sure sushil 👍👍

[@gurleenvirk1949]

Hi thanks for this video, explained everything in much simpler way. Please post parallel streams video also as soon as possible. 👍🏻

[@CodeDecode]

Thanks Gurleen. Yes we will post that soon 👍👍

[@schaugala4017]

Hi Can you please increase font size of eclipse while explaining it will be helpful while watching in mobile. Thanks

[@CodeDecode]

Sure. Thanks for brining this issue to our notice .will definitely keep this in mind next time. 👍👍thanks for putting light to this issue.

[@JyotiKumari-ik1rf]

where is next video on parallel stream?

[@CodeDecode]

Will upload soon 👍👍

[@shivamshah431]

Very clear and precise explanation. Do you have a medium blog or a twitter profile that I can follow?

[@CodeDecode]

Thanks shivam and You can connect us on LinkedIn

[@ayushyamishra8196]

Nice videos ma'am , Pls do start a series of project with Spring , Hibernate and Microservices

[@CodeDecode]

We are working on this, probably you'll see next video on this...

[@ashutoshkumarsingh1]

you are just awesome super like👍👍

[@CodeDecode]

Thanks Ashutosh 👍👍

[@siddharthshinde9630]

First of all thanks a lot your videos are excellent please cover Problems on parallel processing aa well 🙂

[@CodeDecode]

Sure Siddharth 👍

[@nageshndl]

please do more on parellel streaming

[@CodeDecode]

Sure 👍

[@emmanuelmiramonvazquez9591]

Thank you so much, I really appreciate your work, please a video about threads interview questions

[@CodeDecode]

Sure 👍👍

[@arjun9059]

nice explanation and good effort

[@CodeDecode]

Thanks

[@khemchandkolhe3]

very helpful video thanks, plz take complex examples on streams and parallel streams

[@CodeDecode]

Thanks... Sure we will cover it soon...

[@sahanabhat2175]

Thank you so much very very easy way to understand. Lot of effort to do this. Thanks a ton

[@CodeDecode]

Thanks Sahana🙂👍

[@sushilmadankar53]

please reply upcoming video link (problems with parallel stream)

[@MegaKuheli]

It's really engaging..waiting eagerly for the parallel Stream next video.

[@CodeDecode]

Thanks Kuheli .....

[@punit41290]

Hi can we used parallel stream in enterprise application

[@CodeDecode]

No we should not punit , as per my understanding . It's easy to convert stream to parallel stream just by parallel() or parallelStream () but it will bring a lot of overhead with it, as they use common fork - join thread pool. I will cover consequences and disadvantages of them in next video. Thanks for writing back to us 👍👍.

[@CodeDecode]

We should use only when certain conditions are fulfilled , which we will cover in upcoming videos, but it does come with a lot of disadvantages. It's simple to covert but comes with lot of overhead and complexities .

[@devisri2617]

I really appreciate your topic on streams and these two videos helped me so much. Thank you for providing detailed explainations.

[@CodeDecode]

Thanks Devi Sri 🙂👍

[@sharmarahul17]

Perfect explanation !👍

[@CodeDecode]

Thanks

[@prashanthk4457]

Hi mam can u create sum of even number using stream without using sum inbuilt function

[@sukunkusum1720]

Hi Team Code Decode! Excellent explanation. Eagerly waiting for problems on parallel streams and optional concepts.

[@CodeDecode]

Sure kusum we will upload it soon

[@rajukaranjule4845]

First of All you voice is very beautiful. "Wow, this Java 8 tutorial is absolutely fantastic! 🚀 Your clear explanations and engaging examples make learning these new features a breeze. I've been struggling to grasp some of the concepts, but your video has really helped clarify things for me. Thank you so much for taking the time to create such high-quality content. Looking forward to diving into more of your tutorials! Keep up the excellent work! 👏"

[@anubhutidoshi8999]

can you please make a short video on difference between Map and flatmap

[@devanshusharma3733]

Thanks for creating knowledgeble and understanding videos🙏. If you create video on parellel stream then it help to us for cracked some complex interview.

[@devanshusharma3733]

I think you forgot to cover about Reduce method. Please give some knowledge in next video. Thanks 👍

[@CodeDecode]

Sure I will create video parallel streams and reduce method in upcoming videos 👍👍

[@sreejak6776]

Can you pls provide information on map vs flatmap

[@CodeDecode]

Sure sreeja we have noted the topics and soon we will create video on the same

[@sreejak6776]

@@CodeDecode Thank you

[@tirupatirao2854]

Mam can you please upload PPT as well. To recollect the knowledge

[@CodeDecode]

Everything is in description

[@RAJEEVKUMAR-bt5ie]

Please cover the parallel streams topic in next part so that I can get complete knowledge on it.

[@CodeDecode]

sure we'll upload it soon

[@nitigyasahu8402]

Please cover parallel stream and also a spring boot project on microservice

[@CodeDecode]

Sure 👍

[@pallemmani6726]

Could you please cover parallel streams in one dedicated video?

[@prakharupreti553]

Very good explanation of streams. Probably the best tutorial for streams in you tube

[@CodeDecode]

Thanks Prakhar 👍🙂

[@madhushankarmj]

Very good explanation

[@CodeDecode]

Thank you ....

[@SambitKuSahu]

Thank you so much for your time and effort for making this video and putting into KZbin. The way you explain the things is very easy to understand. Thank you so much :)

[@CodeDecode]

Thanks for the motivation Sambit 👍👍🙃🙏

[@yoshitamahajan353]

Please share link of next part of parallel stream..

[@sanzayy]

Thanx for making these topics easy to understand

[@CodeDecode]

Thanks for writing back Sanjay👍👍

[@rajatmahajan5112]

Mam could u please upload parallel stream in details with example

[@CodeDecode]

Sure. Will upload soon 👍👍

[@shikhasrivastav9208]

I like your videos. Please continue making more

[@CodeDecode]

Sure 👍👍

[@avitesh1904]

Stream.of("anshika", "akhil", "avitesh", "Radha").filter(x ->x.length() > 5).forEach(x -> System.out.println(x)); this line is giving me output but Stream.of("anshika", "akhil", "avitesh", "Radha").filter(x ->x.length() < 5).forEach(x -> System.out.println(x)); but if use < this operator , it is getting terminated why? even

[@sureshgarine]

hi madam, can u do a separate video in parallel streams as well

[@CodeDecode]

Sure Suresh 👍👍we will do that

[@venkatasaikrishnak6984]

I must say...it's the best I've seen on Java8 streams explanation and usage. Please continue with next part of Parallel Streams.

[@CodeDecode]

Thanks venkata👍👍

[@richa1806]

Can u plz upload spring video tutorials??

[@CodeDecode]

Next video will be on spring mostly

[@richa1806]

@@CodeDecode Ok Thank you

[@CodeDecode]

No problem 👍👍