Top Core Java Interview Questions || Core Java Interview Questions and Answers [MOST ASKED]

[@theSeniorSDE]

Thanks for making such informative videos. I am preparing for interviews and your channel is helping me alot. I will let you know after I crack my interview 😊

[@CodeDecode]

i will be waiting for that :) hope to hear from you soon 👍Alll the very best 👍👍

[@theSeniorSDE]

@@CodeDecode thanks

[@ajitkuranevlogs4981]

All the best

[@usamaansari7903]

what happen have u selected or not?

[@CodeDecode]

That's a great news Manish... We really wish you all the best for your future....

[@consistentlearners]

Thanks for making such videos. These videos are very helpful for interview preparation. I would like to correct you on one question mentioned in the above video related to JIT compiler. The probable accurate answer to it would be below answer. When a Java program is executed, the JVM interprets the bytecode one instruction at a time. This process is relatively slow, because each bytecode instruction must be interpreted by the JVM. However, when the JVM encounters a loop or frequently executed code, the JIT compiler compiles that bytecode to native machine code and caches the result, so that subsequent executions of the same code can be executed more quickly.

[@hadduken37]

Thank you so much mam! I got a job offer because of you.

[@CodeDecode]

❤️❤️ well deserved man. Keep learning keep shining as always 🌟🌟

[@spooja4549]

1.why java is not 100% object oriented? 2.why pointers are not used in java ? 3.what is jit compiler in java? 4.why string is immutable in java? 5.what is a marker interface? 6.can you override a private Or static method in java? 7.Does finally always execute in java? 8.what methods does the object class have? 9. How can you make a class immutable? 10.what is singleton class in java and how can we make a class singleton?

[@iyyappanvenkat3635]

😊

[@priyankachougule4334]

Thank you @CodeDecode..I just recently got opportunity in company for lead role in just a month and I am having 5 years experience only..it's kind of achievement in my organization..please keep post videos with same enthusiasm. Thank you 🙂🙏

[@CodeDecode]

That's awesome Priyanka. Congratulations 🎉🎉🎉🎉🎉. Keep working hard , you will reach all the heights very soon 🙃

[@dipaksahane2120]

Madam plz give me some tips.. Plz

[@SaiTeja-ym2er]

Thanks to whole team. Because of your tutorial and important guidelines. I had cracked the 3 companies with satisfied package.

[@CodeDecode]

Many congratulations Sai. 👏👏👏👏well deserved Man. You really worked hard to achieve this milestone. 👍👍🙂🙂👏👏👏👏👏

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@priyankachougule4334]

Great Content & precise explanation! These are all the questions I faced in the interviews. It really helps me & boosting my confidence! Thanks a ton!

[@CodeDecode]

Thanks priyanka 👍👍. M glad it's useful . Keep learning keep growing 👍👍

[@sidrakhan5857]

Like seriously these are concept making questions that work like blueprints to learn and differencing any language to other one.. hats off mam ❤️

[@CodeDecode]

Thanks Sidra 🙂👍

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@ashishtiwari3770]

Most helpful video for interview as well as personal learning purpose.Voice is as clear as the explanation. Sabse Pehle at 14:29 😄

[@CodeDecode]

Thanks...

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@priyasujitsalunke5274]

Thank you so much ma'am. I am referring all your Videos since last one month and I have cracked interviews of TCS, LTI, HCL, Wipro, HSBC. Received a much better offer than I expected. Thank you so much ☺️ god bless you ❤️

[@iampacific352]

how u prepare to crack it can u tell me plz..

[@CodeDecode]

Many congratulations Priya. Well deserved Girl. 🎊🎊🎉🎉🎉keep learning keep growing . So proud of you🎊🎊🎊🎊

[@priyasujitsalunke5274]

@@CodeDecode Thank you so much ma'am for such a love ❤️ keep motivating us ☺️☺️

[@priyasujitsalunke5274]

@@iampacific352 I was very afraid at the beginning but then I started giving interviews... Almost every call... Then made a question bank of all questions.. and now after one month I already knew what the interviewer is going to ask ... ☺️☺️ It's fun.. just start and make a question bank.. and at the you can crack any interview. All the best 👍

[@CodeDecode]

Nice suggestion Priya! M glad you are not just focusing on shining alone, but pulling others too with you. Glad to see this ❤❤🙂🙂👍👍👏👏🎉🎉🎉🎉

[@priyay]

Wow ... Wednesday Eve i am having an interview.. thanks a lot fr this clarity ❤

[@CodeDecode]

All the very best 👍👍👍👍 do well.

[@harmanmax]

nice explanation mam , am background from php from last 6 year now just started learning Java . this is good start for helping me and others , thank you.

[@CodeDecode]

Thanks 😊

[@durgamadhabajena320]

This is some top class teaching. One of the best java explainers that I have came across.

[@CodeDecode]

Thanks Durga 👍👍

[@jeejavrajan165]

Thank you so much for these videos. Helped me crack 2 of the 3 interviews I attended. I'm joining next week. Thanks a lot ❤️

[@reshmacr8088]

congrats

[@CodeDecode]

That's such a great news Jeeja. Many congratulations to you. Keep Shining ⭐✨⭐✨⭐✨ girl

[@sathishraja2406]

Congratulations

[@shameemahamad2617]

surely the questions you have selected in this video are all very important, thanks for making such an informative video.

[@CodeDecode]

Thanks Shameem 🙂👍

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@JP-uv2nh]

Straight to the point. Clearly explained. Thank you so much.

[@CodeDecode]

M glad you liked it

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@backbenchersclassbbc5089]

I hope this video will help me to get placed in MNC which I am going to attend interview 😁 and your voice is very nice, helping to learn more 😁😁

[@techcomedy0455]

Hi Karthik, did you get offer?

[@rohith1976]

Omg I watched your video today morning before my interview I got exact same questions from this thank you ❤️

[@CodeDecode]

Been there on the candidate seat many a times Rohith 🙂. That's why we know what will be asked mostly 😁👍, hope u got cleared and got the job. All the best Rohith keep learning keep rocking man 👍👍

[@sumeght1878]

Had been workin in an IT firm for over 2 years, made an attempt to switch for better prospect and hike. Cleared th coding round but failed the interview miserably. Had I came here before, things could have been different 💔. Thanks for making such videos. I have a better understanding now. Thank you

[@abhishekseth8008]

may be interviewer also watched the same video so to decide which questions to ask in interview 😂😂

[@DharoorVinayKumar]

@@abhishekseth8008 😂😂may be.

[@engineersfunda4594]

@@abhishekseth8008 😁😁😁😅😅😆

[@anushavepuri4152]

Really helpful.... I never seen these kind of vedios earlier.... Really appreciate your great work mam..... Please keep on gng.... Thank you so much .......

[@shivanikulkarni9192]

Thank you so much for this series.. It helped to get me job at CITI

[@CodeDecode]

You're welcome Shivani and all the very best for your future endeavours

[@kuntalchaudhari5928]

Thank you so much for making very informative videos. I am able to crack interviews and got 3 offers in hand.. thank you so much

[@CodeDecode]

Many congratulations Kuntal 🎊🎊keep learning keep shining Girl ⭐✨⭐✨

[@Priya1_123]

Straight to the point, lot of information covered and it's quite useful for interviews.👍

[@CodeDecode]

Thanks Priya 👍

[@naveenkumarkandregula2959]

Great. Nicely explained without any kind of nonsense

[@CodeDecode]

Thanks Naveen 🙂👍

[@wtfun5465]

Thank u mam for covering these all questions .. one of the best video on java 👏..

[@CodeDecode]

Thanks a lot 😇😇👍

[@srirajpandey593]

Valuable information and very important questions. Thanks for making such a lovely video....

[@CodeDecode]

Thanks Sriraj 👍👍🙂🙂

[@gajananraut9863]

thanks a lot for explaining all the Questions in such a great way ..

[@CodeDecode]

Thanks gajanan 🙂👍

[@santhoshivempati9757]

Very nice and informative...which i have never seen anywhere. Thank you so much. Its very helpful to me

[@CodeDecode]

Thanks 👍👍

[@santhoshivempati9757]

@@CodeDecode Such a Nice explanation . Ma'am can you plz do a complete tutorial on Core Java. It would be very helpful..

[@vickychatap2734]

I watched this video before every interview.. good understanding and love you voice ❤️

[@dumbbo123]

Thank you jee for your video, bohot acha hai aur kaafi useful thi! subscribed!!

[@CodeDecode]

You're welcome

[@ajitpeshane]

Thanks

[@CodeDecode]

Thanks for the support ajit

[@utsavmodh9698]

You have fabulous speech🎉 of course great content as well. Outstanding.. Keep uploading ❤

[@mikedelta658]

Wonderful! It will help me for my upcoming Java developer interview .

[@CodeDecode]

Glad to be helpful Mike 🙂👍

[@coolyaaro]

Thank you so much team Code Decode , your videos were a huge help to prepare for interviews ,truly grateful for your videos ,wishing you all the success you aspire

[@CodeDecode]

Thanks a lot 🙂🙂👍👍. Keep learning keep shining 🌟🌟🌟🌟

[@jayakrishna-xx4io]

its so nice of you mam your videos are helping in right time and we want more in java and as well as DBMS interview questions.....✌✌☺☺☺

[@CodeDecode]

Sure will upload more videos.

[@CodeDecode]

We do have a playlist for all Java questions. Please do check that.

[@jayakrishna-xx4io]

@@CodeDecode Thank you

[@kirankumarmothukuri7660]

Your videos are amazing. it is helping me a lot for interview preparation. I liked subscribed your channel.

[@CodeDecode]

Thanks a lot Kiran 🙂👍👍

[@utsavkaushal9063]

This video was too good. One of my friends was asked how to make a class immutable in an interview. He was also asked how to make a singleton class. This video has both!

[@CodeDecode]

Thanks for helping others by contributing your experience 🙂👍

[@thethreesowrdz]

14:49 The way you say "similar" got me!

[@ashishpal5446]

Very smooth explanation... Thank you so much for these kind of videos... This helps very much while looking for job change... Keep doing it ✌️

[@CodeDecode]

Birds of a feather flock together. I have been through this phase where I needed to switch quickly but couldn't find a place to find all questions at one place. Hence took the initiative to do it myself :) hope it helps others too. Great to have viewers like you. All the best for you future 🙂 👍

[@TanmayaGuru]

@@CodeDecode wonderful initiative

[@CodeDecode]

Thanks 👍

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@SreedharaGS-q4h]

Purpose: JIT compilers aim to improve program performance by compiling frequently executed parts of code into native machine code at runtime.

[@sagarhari]

Just wow content 😀 Thank you!

[@CodeDecode]

Thanks Sagar 🙂👍

[@mohammedshabbirahmed976]

you rock and your knowledge and explanation is outstanding

[@CodeDecode]

Thanks !! 😊

[@pallavi5284]

Di you are the best, hardly there are people who can explain the way you can explain I have learnt so many things because of u. Di but I have one request if u start DSA related series there is no one other than you have the ability to make us understand those hard algorithms in simple way on whole KZbin world. It will really help everyone if u too enter into DSA training

[@CodeDecode]

Thanks Pallavi. Sure will take that in count👍

[@akankshasharma9369]

thanks for such important video i cracked my interview and urs video helped alot ty so much for such efforts and making it free for us

[@CodeDecode]

Thanks Akanksha. Many congratulations on clearing your interviews🎉🎉 keep learning keep shining 🌟🌟

[@dipaliyadav-koli1060]

Thank you dear for such a great video.. Very helpful to brush up your skills.. ❤

[@CodeDecode]

Thanks Dipali 🙂👍

[@busipavankumarreddy5013]

Maam,very good explanation with basics , thank you so much maam

[@CodeDecode]

You are welcome pavan....

[@prathambante15]

Thank you so much maam. You teach very well🙏🙏

[@CodeDecode]

Thanks Pratham 🙂👍

[@AyeshaKhan-lb8vq]

Great video with amazing explanation.. 👍👍

[@CodeDecode]

Thanks Ayesha 😀

[@independentboi8499]

Thank you so much for this amazing informative video.... We need more content....

[@CodeDecode]

sure we will create more

[@MrAsgar123]

Awesome Explanation, Thank you so much for sharing this useful knowledge for interview purposes.

[@itsmesaquib]

Nice set of questions. Thanks ❤

[@CodeDecode]

Thanks

[@sagar1691]

Very well explained...looking forward to watch and learn more on java

[@CodeDecode]

Sure 👍

[@musicblogvikasrockzeditz]

Most imp questions collected thanku for the exlanation

[@CodeDecode]

Thanks 🙂🙂

[@kamalnayan5331]

Thanks a lot mam ..😁, keep making such videos

[@CodeDecode]

You're Welcome..

[@sumeetsapla]

Singleton explained very nicely. Thanks for video👍

[@akashlathiya2725]

Thanks buddy, i got 7L package

[@CodeDecode]

Great all the best for your future 😊😊

[@akashlathiya2725]

@@CodeDecode 🫶🙏

[@vijay4747]

What company bro ? Any interview questions please share

[@GyanSingh-u9m2u]

Kam hai bahut

[@SurajSingh-no8rd]

​@@GyanSingh-u9m2uTera hain kya 3 ka bhi nahi hoga tuzko package logo ko nam rakhta Hain

[@hemanthkumarsk2956]

Thanks!! Why is your voice so sweet 😂❤

[@CodeDecode]

😂 thanks

[@Rajendra-k3x9g]

Thank you mam you are helping a lot 🙏🙏🙏🙏

[@CodeDecode]

you're welcome Rajendra

[@shivamrathod5059]

I had an interview 2 days ago and Immutable class, singleton, Finally, Method Hiding, Java is pure object oriented or not? This questions were asked, I came here just to check different questions for my upcoming TCS Interview 🤗, Wish me Luck, BTW Thanks For this video 💙

[@CodeDecode]

kzbin.info/aero/PLyHJZXNdCXsfqAkteaQ6JfZ_IHvxX-Hj3

[@CodeDecode]

This is almost all what u need Shivam👍. All the very best 👍👍 Prepare well 👍👍

[@shivamrathod5059]

Thanks, I'll cover all the videos that present in this playlist, i already completed 6 video from it, it's kind of quick revision of Java as well as some Boosters that will help to crack the interview for sure 💙😊

[@CodeDecode]

All the very best Shivam 🙂🙂👍👍.

[@coverdrive0073]

Great video mam.. thankyou soo much.

[@CodeDecode]

😊😊👍👍

[@deep_parida]

Much appreciated... Bang on target...

[@CodeDecode]

Thanks deeptiranjan

[@okaberintarou5020]

This was beautiful! Keep up the good work.

[@CodeDecode]

Thanks 🙂🙂

[@rishav.raj179]

One of the best video. If possible please make more.

[@CodeDecode]

I am glad you liked it. I have already uploaded some more videos please refer the link below : Core Java frequently asked Interview Questions and Answers: kzbin.info/aero/PLyHJZXNdCXscoyL5XEZoHHZ86_6h3GWE1

[@rishav.raj179]

@@CodeDecode yaa after watching this i went through all and Just loved it. 🧡

[@rishav.raj179]

@@CodeDecode one request if you can make videos on awt swing applets

[@CodeDecode]

M glad you find it helpful

[@CodeDecode]

Sure once m done with spring hibernate db core Java , will move to then too

[@NaveenSMaRK]

Tanks for ur Video.. its very helpful to prepare For interview so do more interviews videos

[@CodeDecode]

Sure 👍 thanks 👍👍

[@akash89ful]

Learnt so many new things today....a big thank you !!

[@CodeDecode]

Any time Akash 🙂👍

[@prasadjoshi007]

Thanks ma'am Very Appropriate Interview Questions and Answers.

[@prasadchougale8865]

Thanks nice explanation very helpful ☺️

[@CodeDecode]

Thanks Prasad 👍

[@techcomedy0455]

Hi did you get offer?

[@RajaRaja-c1g5f]

Thank you very much Very help for Interview

[@CodeDecode]

You are welcome

[@charu6363]

Yes, please more interview questions for java and JavaScript. Thank you.

[@CodeDecode]

Sure 👍

[@swapnilpandey6519]

Great work, helped alot, kudos to hard work!

[@CodeDecode]

Thanks for the nice words

[@jaggyjack1005]

Wow very informative thank you mam

[@CodeDecode]

Thanks 🙂

[@shivanipawar1414]

I started watching before some days only but i like the way you describe. Please if there is any session on ejb , it will help to understand

[@CodeDecode]

Sure Shivani, we will do that 👍🙂

[@jayatekale2823]

World’s best #1 series for preparing interview questions on Java got hired 😇 thank you so much it really really helped me out to be more confident and clearing all doubts while covering all important concepts.

[@CodeDecode]

Many congratulations on clearing your interviews Jaya. 👏👏👏🎊🎉🎊🎉. Glad to see you this happy and confident. Keep rocking Girl 👏👏👏👏

[@nitupandey7520]

Very helpful video thanks a lot 👍

[@CodeDecode]

Thanks nitu. Keep learning keep growing. All the very best from team code decode 👍👍

[@chandrasheker3887]

Thanks for enlightening us 👍🙏

[@CodeDecode]

Thanks chandra....

[@ankushborkar9902]

Very good questions and answers covered

[@CodeDecode]

Thanks Ankush

[@techcomedy0455]

Hi Ankush, did you get offer?

[@SamPaulIsaac]

Thanks team for the wonderful work, it really helps.

[@shubhamtagalpallewar7125]

Thank you ma'am, these are real time interview questions, which I had faced too, getting more clarity with your videos now.. also if possible please make videos on exception handling interview questions...

[@CodeDecode]

I am glad you liked it. Will upload the video in exception handling soon.

[@Santosh-Kumar-D]

You faced these questions as fresher ???

[@shubhamtagalpallewar7125]

@@Santosh-Kumar-D no, as a experienced

[@shubhamtagalpallewar7125]

@@ankita6113 Previosly @Amdocs,now in CSG

[@vinodsingh-zs7pb]

@@CodeDecode) let ll) l

[@NehaSingh-yv2jn]

Totally insightful. Thank you for making this amazing video.

[@CodeDecode]

M glad you liked it

[@java.interview.preperation]

www.youtube.com/@onlyinterviewquestions/shorts I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback

[@venkateshk3725]

Thank you so much 'Code Decode' team for these awesome videos. For few months, I'm struggling to switch from manual testing to Java developer. Not able to crack interviews. But now I got confidence after watching these channel videos. Suddenly 5 days back I came across this channel, all videos are insightful. I will watch all videos and share video links to the needy. Can you please add a video on the multi-threading detail tutorial?

[@CodeDecode]

Thanks for writing back Venkatesh 👍much appreciated. Yes will upload that soon 👍👍

[@JamesRodriguez-ql9vp]

Any luck switching to Java Development? I'm also a manual tester and would need your guidance on how to switch career paths

[@rakeshmallick9479]

All of your videos I have seen it is super

[@CodeDecode]

Thanks 🙂

[@rohitgomkar1095]

Your imformative videos helping me alot

[@CodeDecode]

🙂🙂Thanks Rohit 👍🙂

[@subramanianchenniappan4059]

All your videos are good .

[@CodeDecode]

Thanks a lot 🙂🙂👍👍

[@themahendra001]

Thanks for sharing the knowledge!

[@CodeDecode]

You're welcome Mahendra

[@UU237]

Thanks you videos are really helping me to brish up quickly especially when i am not getting time to read i hear you videos even while cooking :) ...please make a detailed one on mulyi threading and files...these have been always my week points

[@CodeDecode]

M glad that it's helpful . Sure will cover them with part 2 of core Java

[@UU237]

Thanks for replying, hope to see the part 2 soon

[@chishamalama]

Thank you for your video. Very helpful

[@CodeDecode]

Thanks 🙂🙂

[@OG-ek2kw]

A great great video thank you very much

[@CodeDecode]

You're welcome

[@shreyashachoudhary480]

Informative, thanks!

[@CodeDecode]

Thanks Shreyash 🙂🙂

[@nisargpatel2958]

Great Videos, Thank you

[@CodeDecode]

you are Welcome...

[@soumikbanerjee3059]

This is top-drawer stuff. Thanks a ton.

[@CodeDecode]

You are Welcome...

[@christokawuma6962]

YOU PRECISE TO THE POINT, LOVE YOUR CONTENT!!!!POSSIBLE TO HAVE PRACTICAL SPRINBOOT AND ANGULAR PROJECTS...wouldnt mind having subcription

[@nonegirl112]

Thank you may be this will be help me in future

[@CodeDecode]

Surely it will help

[@Smile-queen143-l9h]

Thank you so much ma'am ❤❤❤❤❤❤❤❤❤

[@CodeDecode]

👍👍

[@sankarsubramanian6312]

Nice explanation, thank you :)

[@CodeDecode]

You're welcome

[@shubhamtyagi8029]

Very helpful, clear, to the point and nice content. Please try to make video on Serialization and Multithreading concepts also.

[@CodeDecode]

Sure we will create video on that soon 👍👍

[@rams6227]

Perfect explanation..thanks for all your videos which is really helpful...can you post something on Java threads please.

[@CodeDecode]

Sure. Will create a video on threads too 👍👍

[@gauravsrivastava17]

Good video with great questions

[@CodeDecode]

Thanks

[@manasigurav1538]

helpful... provide this ppt in description also👍👍

[@shubhamshukla2385]

soo much to learn from this video.. thank u mam

[@CodeDecode]

Thanks Shubham 👍👍👍👍

[@anushkachawla1019]

Yes this video helps a lot ❤️

[@CodeDecode]

Thanks

[@shivamrai2889]

Thanks a lot for these videos...

[@CodeDecode]

👍👍🙂🙂