SOLID Principal - Interview Questions and Answers

[@ogundipeorobola5304]

Yet to complete this tutorial but I have drop this comment at 15:42 (LSP). I am very impressed at how you simplify the SOLID principles. Thank you very much

[@bhargavarajuthirumalasetty]

Oh My God! Sir..! the way you explained the Liskov Substitution is awsom. I have gone through many documents and videos, but this is super. Thank you sir..!

[@interviewhappy]

Your Welcome @user

[@asindal]

​@@interviewhappy liskov substitutions and interface segregation are seems similar.... What's the difference?

[@jabeerbasha123]

It's very genuine review from my end. I am zero to hero for interview preparation with you all interview question and answer videos. Now I am in middleeast with 400 % hike. Really appreciated for the wonderful content.

[@interviewhappy]

All the best @jabeer

[@mohammadrafi8103]

bhai who giving you 400% hike? 🤔

[@aashnavijay1716]

Best and precise explanation of solid principles available on youtube...😊 Thank you very much Sir, Your videos has helped me a lot in cracking 7 interviews. Finally I have got 200% hike..😊 I have gone through your other videos like .net core interview questions, web api, c#, and sql server interview questions series.... and mamy more... You are gem for us..... Thank you so very much...🥰

[@interviewhappy]

Your achievement has truly filled my heart with joy. Celebrating your accomplishment and wishing you continued success. Congrats! @aashnavijay1716

[@sumitprakash3158]

This is One of the best SOLID Principle videos ever. However, as Happy says, we must keep revising, the more we revise, the more we absorb.

[@lijuthomas5507]

Your teachings are very clear and simple. I have watched many videos about the Solid principle but those didn't give me clarity. But you explained it very well. Now I understand the Solid principle thoroughly. Thank you happy.

[@puresoul794]

Thanks a lot sir, I had read/watched about SOLID principals may time but it was not getting clear, But after watching this video with theory n example combo and your short n simple way of explanation, its crystal clear now.

[@MrSHYAM_10]

One of the best video on Solid Principal explained in simple manner.

[@interviewhappy]

Glad you think so! @mrshyam1985

[@iam.friesen]

not all heroes wear capes. you are definitely a hero.

[@interviewhappy]

Thanks brother for appreciating with such beautiful words @iam.friesen

[@krishnakumar-yh7op]

Thanks Man This is first Time when I understand SOLID Principle concept after watching lot's of videos. S - Single Responsibility Principle O - Open-Closed Principle L - Liskov Substitution Principle I - Interface Segregration Principle D - Dependency Inversion Principle Thanks Much

[@yesubabu2880]

u should have done, main method, 2nd and 3rd lines, employee=pEmployee; then call employee.clacsalary() and employee.calcBonues (15:57)

[@mariol1436]

You're quite literally saving lives with these videos. Keep up the good work. 💪

[@seanleith5312]

Indian English is not something I will listen to ever. Gosh.

[@rounakmukherjee1009]

Best explanation on SOLID. Kudos

[@user-rp9iis1en6h]

Your videos are extremely helpful, I was able to crack 3 out of 5 interviews after watching your videos. Please make some tips or videos on how software engineers can improve communication skills so that they can prepare themselves for the team lead role.

[@suryanarayanbaliarsingh5363]

This is the best SOLID principles explanation.

[@interviewhappy]

Thanks Surya. All the best for your career.

[@sangeetha1713]

Very useful video.simple, easy to understand and clear.

[@interviewhappy]

Glad it was helpful @sangeetha

[@brijeshkumarsinha1419]

Great way to explain the thing in a very simple and understandable way sir. Thanks.

[@shekhar1497]

finally someone teach in simple language.Thanks.

[@sunnypyon7010]

You are the best! Thankyou for explaining clearly and easy to undertand

[@interviewhappy]

Glad you think so @sunny

[@venudamarla175]

Please make a video on design patterns

[@interviewhappy]

Noted Venu, not very soon. But I will cover them one day.

[@GiridharaReddy]

Is design patterns available?

[@Rajdweep]

man you explained better than the guy of the paid course i purchased 🙂

[@interviewhappy]

Thanks @Rajdweep

[@Rajdweep]

@@interviewhappy welcome bro

[@simbuvlog4366]

Very clear and Simple Explanation. Thank you so much

[@interviewhappy]

Glad it was helpful! So nice of you to appreciate @simbuvlog4366

[@VisionVibesNew]

The thing is that you made LSP too simple on the earth 😂😂 ... Salute Sir ❤❤

[@saqtquadri]

LS and DI principles was getting difficulties with other videos, but you clear the confusion, Thanks alot.

[@mdweena870]

I agree

[@sudarvendhanmahendran3534]

Thanks for your clear and short explanation with its example. I watched this multiple times. Thank you 😊

[@interviewhappy]

You're very welcome!

[@nileshpatel6566]

Please make a video on design patterns mostly singleton and factory.

[@chermalingam3425]

Can you share Design pattern knowledge? That one is more useful.

[@Angeluslove7]

Wow, this is the best explanation I found on internet so far. Thank you

[@interviewhappy]

You're very welcome!

[@mdweena870]

Thank you! Thank you so much! I've watched so many videos on this topic and couldn't really understand it enough to communicate it until I watched this one. Thank you once again

[@interviewhappy]

You're very welcome!

[@akankshaojha5488]

Very accurate n to the Point example

[@josecanyousee]

Thanks for the info, Happy. Question at 21:00: When you pass the logger to the constructor as an Interface type in the DataAccessLayer class, is this an example of polymorphism?

[@amodhmandloi146]

No, polymorphism is generally method hiding, overriding and overloading.

[@interviewhappy]

Agree, that is dependency injection, when you inject the dependency service or interface to other class via constructor

[@danieljacales326]

You are the best Pakistanian developer, really good explaination of SOLID principles

[@umeshsharma6676]

He is an Indian

[@vivekpuri-08]

😂

[@claretburrito64]

Thank you very much sir, your videos are very helpful and easy to understand

[@interviewhappy]

Glad to hear that @antonfesenko920

[@hectorluis9294]

Nail It. Best explanation I have found on the subject.

[@interviewhappy]

Thanks and all the best for your career.

[@poojarakshit2372]

best, simple and neat explanation of the SOLID principles. thank you so much Sir.

[@interviewhappy]

You are most welcome

[@ammargondal8176]

My Bestest Tutor i,ve ever 😊💯

[@interviewhappy]

Glad to hear that! @ammar

[@sasivijaya]

you are simply superb and really master at explaining all these

[@anbazhagand]

Nice brother. Clear and Perfect explaination.

[@interviewhappy]

Glad you liked it @anbazhagand

[@shyamsoni5389]

This video should be on TOP

[@luisgonzalez8877]

A learned a lot of this video 😊. One more question: To solve the LSP issue the solution is to use the ISP(min 17:50)?

[@KinglyStar77]

Thanks a lot sir. I am currently looking to change and you are my guide.

[@interviewhappy]

All the best @kinglystar

[@hashirali2604]

You nailed it 🎉 especially LSP

[@srinivaskore470]

Please prepare tutorials on WEB API and Java Script and J Query

[@interviewhappy]

You can check my channel. Web API and JavaScript already there. All the best for your career.

[@padmashreebaithyar9348]

I think you are a pro in knowledge transformation.

[@AshfanSaja]

Thank you very much sir.. i understand it completely.. god bless you and you teaching ability

[@manojjangid6213]

I doubt from my side for DIP. You are creating instance of interface (Logger). But as per functionality, we can't create instance of interface and abstract class then why are we creating in DataAccessLayer. Please correct me if i am getting wrong.

[@prathuriramamurthy6128]

its only type of object...you can pass the instances of class which implement that interface.

[@tvsnmurthy2370]

Thank you very much sir for sharing this video... It's very helpful to me. Awesome explanation and easy to understand...

[@dibyenducoder]

Hi Happy, I really liked your explanation about SOLID Principles and I could answer them easily. But, the market demand is nowadays high so could you please try for Design Pattern (GOF + Repository Pattern, CQRS, Unit Of Work, Object Pool) . I keep forgetting and could not answer in proper way as I think it is important to have good technical vocabulory that has good keywords and technical sound to get high chance of cracking the interview than speaking broken, beating around the bush manner despite having some knowledge. I'm waiting for your next video. 😄

[@khushbuthakkar8219]

Awesome content, I am watching your all videos and sharing in my team as well.

[@interviewhappy]

Thanks Khushbu for watching and sharing. All the best for your career.

[@ananthie8032]

Thanks a lot . Your videos helped me to get 2 offers .

[@atulbhandari2786]

Thank you sir very amazing content .pls make vedio for design patterns as well..and authentication in dot web api

[@interviewhappy]

Oh Bhandari ji, great to hear from you again..

[@sumuduperera7821]

Thank you , please make a video for design patterns as well

[@sanjibgayen7187]

I like the way you present all the information. Thank you very much.

[@interviewhappy]

Glad it was helpful!

[@ICanDoCode]

I know you have used chatgpt to get this sample examples for solid principles ☺Anyway Great Understanding

[@shirinmirzimk4818]

first time i understood lsp from this

[@HappyInvester007]

Nice. Best Example....

[@kamalr7799]

hi Brother, Your videos are so good for studies, i have fully follow up your videos for my current interview, thank you so much and thanks lot , As a small suggest can possible to give about the Design pattern videos its very useful for Us

[@kamalr7799]

hi Brother, Its great Move the finally Cracked the 2 offers so for its the only reason is [{Happy}] because of Your's Videos. Thanks its not enough, Thanks and Thank you so much..

[@interviewhappy]

I'm so glad my videos helped you land two offers! Congratulations!

[@sumitprakash3158]

Sir, please make a video on the Design Patterns. It usually gets asked in Mid Senior level Interview. I have faced several times.

[@Jawad-Amir]

Great video man! Hope you all the best on your teaching journey!

[@interviewhappy]

Thanks! You too!

[@berginsheni1717]

Awesome explanation. Thanks for the effort 😊

[@interviewhappy]

Thanks and all the best for your career.

[@shalithadhananjaya2638]

Can you explain Design Patterns as well.

[@dayal86ald]

Awesome Awesome Awesome ... very helpful

[@interviewhappy]

Thanks Dayal and all the best for your career.

[@shuchiarya2104]

Very well explained. Good easy examples !!

[@interviewhappy]

Glad you think so!

[@evidenceetinihekanem4501]

This man is gooooooooooood. Thank you!

[@interviewhappy]

Thanks, glad you found it helpful!

[@sumitprakash3158]

Sir, please make a video on the Design Patterns. It usually gets asked in Mid Senior level Interview.

[@minitam1527]

Thank you so much for sharing this video.. I really appreciate your efforts to make such videos which are short yet covered definition and practical examples both so that it becomes very easy to understand.. Examples make our concepts clear and definition is helpful to represent the concept in interview... 👍

[@interviewhappy]

You got it 100% right. We should know the practical approach, but more than that we should know how to explain the concept to others in interviews. Hidden knowledge will not help in anything.

[@anusuyaguru4762]

Please make video for design patterns

[@interviewhappy]

Sure will try to do it soon @anusuyaguru4762

[@govindbansal2181]

Greatest content 🎉

[@sandhyaranim9437]

Please post design patterns video

[@prateekghosh6984]

Why not we have return 0 for contractual class for bonus method in place of throwing error

[@ranjithranjith621]

Is there design pattern video?

[@luisgonzalez8877]

Why are you mixing SRP by using a method focused on the repository layer with another one in the logic layer to explain it( min 04:14)? It doesn’t make sense because each layer has different approach…

[@srinivasankharpayya671]

Please make a video on design patterns.

[@someonesoumya]

Thanks Happy from Happy 😀...

[@interviewhappy]

Thanks and all the best for your career.

[@anjalipuspa5203]

Hello Sir, Can you please create the videos for design patterns with practical example, it will be very hepful. Thanks for sharing all the c# related interview questions with examples. It's really helpful to crack interviews. Thank you! 🙂

[@marcelositonio2495]

Very SOLID explanation.

[@interviewhappy]

Glad it was helpful!

[@04_itsanskaragarwal73]

Wonderful Explanation 😮❤

[@interviewhappy]

Glad you found it helpful!

[@rakkarajput]

Yeah finally it's coming 🙌

[@vikassingh-oh6ci]

Awesome know sir. keep it up. 🙏

[@YousiLife]

Hello Sir. After watching all Your videos related to Dotnet I got placed for 34.5LPA. This is my 2nd company and it helps me a lot after attending interviews after 10years. Thank you!!!!!

[@interviewhappy]

Warmest congratulations on your achievement! Wishing you even more success in the future.

[@YousiLife]

@@interviewhappy Thank you Sir

[@sreejithm4331]

Design patterns video please

[@interviewhappy]

I will try to do in future.

[@surajsingh-py5fr]

​@@interviewhappyfactory design pattern

[@anjalilawrence7211]

Hi can u give me different between type cast vs convert vs parse

[@dotnetknack]

Awesome explanantion.

[@Rajinderdung]

Good explanation of Solid principles

[@interviewhappy]

Glad you think so! @Rajinder

[@prabhakartiwari1434]

Thank you explained !!!!😊

[@interviewhappy]

Happy to help! @prabhakartiwari1434

[@singarasu90]

mvc application front end ui displayed excel file possibility?

[@faisalTraveller]

Awesome quick contents.

[@mamtakhatana2621]

Thanks a lot Sir, your videos are very helpful and clear concepts thoroughly.

[@interviewhappy]

Glad to hear that. Thanks for appreciating

[@vemankunoor695]

Is Dependency inversion principle and Dependency injection both are same

[@Vijul-bu6qs]

Dependency inversion is a principle, while Dependency injection is a design pattern (or we can say Dependency injection is a way to achieve Dependency inversion).

[@dipakbarnwal6978]

Great mantor ever 😌

[@mamathachanda9308]

Good teaching...

[@caveatashish]

Thank you for the detailed explaination

[@interviewhappy]

Glad it was helpful!

[@chandanaraddu4857]

Sir, please suggest me how to make a proper resume.

[@aaronspain3387]

Many thanks and apologies, but on the same I was finding much difficulty in understanding to the needful of the context and grammar used basically in this wideo.

[@interviewhappy]

np, I am not a native English speaker. That's why there is a gap. I will try to correct this in my future videos. All the best.

[@SNEHAM-w3b]

Asome ❤❤❤❤

[@patelnirmal6867]

Sir 🙏, what is the future of .net? I am going to New Zealand after my bachelors. What is the scope of dotnet developer there in nz.

[@UVkids_channel]

I have doubt in D.I.P (last principal). If there is a problem in chaging name of low level class from "File Logger" to "DBLogger". If I change name of Interface then , won't this be a problem in code ? Please correct me if I am wrong.

[@solankijigar11]

Great video, Sir.👍

[@interviewhappy]

Glad you liked it @ solan

[@prernachaturvedi8258]

I have one question for O - if i am adding new method in a class i.e new functionality which is related to that class only is it voilating the principal?

[@VickySharma-0906]

You can make that method as private, then it will not break SOLID or OOPs principal