Java 8 new features || Java 8 Interview Questions and Answers ( Live Demo with Examples )

In this video, you'll learn about Java 8 new features and Java 8 Interview questions and answers and explanations with live demo and working examples
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Java 8 Interview Questions Complete Playlist :
• Java 8 Interview Quest...
There are lots of new features which were added in Java 8. Here is the list of important features which are mostly asked as java 8 interview questions:
Lambda Expression
Stream API
Default methods in the interface
Functional Interface
Optional
Method references
Date API
Nashorn, JavaScript Engine
Main advantages of using Java 8?
More compact code
Less boilerplate code
More readable and reusable code
More testable code
Parallel operations
Interview question on java 8 Lambda expressions is a very commonly asked question :
Lambda expression is an anonymous function ( without name, return type and access modifier and having one lambda symbol )
Functional interfaces are those interfaces which can have only one abstract method .
It can have static method, default methods.
There are many functional interfaces already present in java such as eg : Comparable, Runnable
How lambda expression and functional interfaces are related?
Lambda expressions can only be applied to abstract method of functional interface.
As we know Functional interface is an interface with Exactly One Single Abstract method and can have multiple Static or default methods.
To create our own Functional interface, You can do following steps:
Create An interface
Annotate that with @FunctionalInterface.
Define exactly one Abstract method.
There is no restriction on number of static and default methods defined in such and interface.
Java can implicitly identify functional interface but still you can also annotate it with @FunctionalInterface . It just give you the security that in case if u by mistake add 2 abstract methods then Compiler will throw compile time error.
Method Reference :
EG : MethodReferenceDemo and FunctionalInterfaceDemo
Method reference is replacement of lambda expressions. It is used to refer method of Functional interface to an existing method. Mainly it is used for code reusability.
Functional Interface’s Abstract method can be mapped to specific existing method using double colon operator (::) . This is Method reference.
Hence Method reference is an alternative to Lambda expressions.
Whenever we have existing Implementation of Abstract method of our Functional interface then we can go for method reference. If no such method like testImplementation() is available then go for lambda expressions.
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Top Notch Videos...Showing Implementation along with the presentation is the best thing I like about your videos.

[@CodeDecode]

Yeah it's important to understand how to implement too 😊

[@neelabhrai231]

you guys helped me a lot in my interviews . Never ever stop this . Its gold

[@sunnyjain630]

Thanks 😊
Probably the best video on Java 8 new features.
Perfectly explained each and everything with excellent communication skills 👏.
YOU ARE A GEM TRAINER 💎

[@sreeharir1029]

This video is very helpful to brush-up the Java 8 features. Kudos to the instructor and team, very simple and good presenation.

[@CodeDecode]

Thanks Sreehari 🙂👍

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Thank you so much for your video contributions…. I’m the one who commented earlier that I’m watching your video like Illayraja music… now I’m happy to share that I cracked and have offers with 2 companies…. Graduated as computer engineer recently… but cracking interviews are something beyond what we learn…. Thank you thank you thank you so much 🙏🏻🙏🏻🙏🏻

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[@kiranmaiganadi4296]

Thank you so much for explaining the difference between Lambda & method reference clearly, i was waiting for this type of explanation for so long. thank you :)

[@CodeDecode]

We are glad that it helps 👍👍 thanks for writing back to us Kiranmai 🙏🙏

[@rohitsharma-xt8qe]

Form 18:14 to 18:39. the moment when I can't resist hitting the like button :) nicely explained Method reference.

[@CodeDecode]

Thanks Rohit 🙂👍

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[@CodeDecode]

Sure Shubham. 👍👍 Thanks for the motivation. These comments helps us in keep posting more videos 👍 thanks 🙏

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Thank you so much for giving these concepts easily in hand. Finally today I understood method reference which was never clear before .

[@CodeDecode]

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[@ishantsharmaa]

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[@CodeDecode]

You are welcome Karthik....

[@paulacobzaru]

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Thanks a lot, Ma'am for sharing your knowledge. It would be great if you create the cover entire JAVA8 concept.

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Please refer to below link :
ruclips.net/p/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy

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Recently had an interview...
And you know most of your videos covers the question he asked me..

[@CodeDecode]

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Thanks a lot hats of for your time and effort.
Please make a video on use of Optional and parallel streaming in detail.Big thanks again really counting on your videos.

[@CodeDecode]

Sure Siddharth, we will create video on that soon 👍👍

[@afifkhaja]

This is so helpful!

[@CodeDecode]

Thanks

[@bushrashekani]

Mashallah Great !! Please continue this
May god bless you

[@CodeDecode]

Thanks Bushra. 🙂
ruclips.net/p/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy

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[@CodeDecode]

You're Welcome...

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😇😇👍👍

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[@CodeDecode]

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Thank you.

[@CodeDecode]

🙂👍

[@akashhivre6566]

Extremely helpful and one of the most important channels on youtube. can we get this ppt or any pdf for all combined questions?

[@manimuttu1]

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Please share the above ppt also. so that we can refer all the questions at a time.
please keep this videos in a playlist - else we will loose some topics.

[@CodeDecode]

Playlist has already been created please refer below link :
ruclips.net/video/oUdENE7ljjw/видео.html

[@nivedaravi2241]

Thanks for the videos. please upload 2nd part

[@CodeDecode]

Sure will upload soon 👍

[@Yash-us5ry]

Thanks for your detailed explanation. I am requesting you to make complete Java8 features with real time scenarios.

[@CodeDecode]

Here you go Yash
ruclips.net/p/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy

[@commonman8540]

very nice detailed expl, thanks

[@CodeDecode]

you're welcome

[@abhijeetbagde1597]

Thank you so much Mam!

[@CodeDecode]

🙂 no problem Abhijeet 👍👍

[@bhagyalaxmipatsariya3408]

Hi, Please make a video of Java 8 tutorials for basics.. Thank you in advance
You are doing great work ,, these videos helped me a lot to understand the basics.

[@maheshgaliboina6721]

Your explanation is very well
I am understand easily

[@CodeDecode]

Thanks Mahesh 👍👍

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Thanks alot explanation is super

[@CodeDecode]

Thanks Venkat 👍🙂

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Super explanation 👌👌👌

[@CodeDecode]

Thanks

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[@CodeDecode]

Thanks Suraj 👍👍🙂🙂

[@shivamshah431]

Very well explained. Please make a video for Java 8 features, it will be helpful for many of us. Thanks a lot.

[@CodeDecode]

ruclips.net/p/PLyHJZXNdCXsdeusn4OM33415DCMQ6sUKy