Java String interview Questions and Answers with example| Immutable | Most Asked | Code Decode

[@anooppressboltme2477]

I am mother of 2 year old toddler and 4 years gap in software field. Because of ur videos I have cracked interviews. Thanks a lot 🙏

[@CodeDecode]

So glad to have you back in IT industry 🎊🎊🎊🎊many congratulations on clearing interviews. M sure u will rock 🤘🤘thanks a lot 🙂🙂

[@Rajshimishra123]

Same case with me hope your videos help me to clear interview plz pray for me

[@deepat2272]

So happy to know that a mother with gap has cracked it. Thanks for sharing and inspiring others as well.

[@nirvikajewellers2390]

hi dear am trying to join as how u prepared pls let me know

[@rupadevigujjari2202]

Yes...True..your videos are very helpful and easily understandable .Great Job. Many Thanks :)

[@kalekar100]

I have cracked multiple interviews purely based on your videos only. Be it core java, streams, spring , boot, hibernate. Since then I have been watching your videos as soon as they are uploaded and have recommended my friends to do so. I think what offer I have earned today is entirely based on your efforts and credit goes to you.Very grateful to you mam 🙏🙏and excited to watch your new initiatives. Please keep going.

[@CodeDecode]

Many congratulations Sourabh. Well deserved Man 👏👏👏👏👍🙂🙂. Keep shining keep rocking. Thanks for supporting us 🙂🙂

[@kalekar100]

@@CodeDecode all thanks to you maam 🙏🙏

[@CodeDecode]

Anytime Sourabh. U are a champ 👏👏

[@rajatsahu8767]

++1
even i am in similar in a similar position thanks @CodeDecode ... my JAVA knowledge has been improved a lot.

[@akashsaha9366]

Awesome. Please make us more strong to clear any java interview question without going to any other channels.

[@CodeDecode]

We hope n target the same Akash 🙂🙂👍👍

[@kalavaguntahridayasaivalli4867]

I never comment on yt videos but I want to say I became a fan of your teaching... I'm on a spree watching your videos and it is helping me a lot in my professional upskilling. Thanks a lot Mam! ❤❤

[@CodeDecode]

Thanks for such a beautiful comment 😊 all hard work is paid off seeing such nice words 😊 keep learning keep shining 🌟🌟

[@Sunilkumar-jn7ci]

Very Well explained !.
Just want to add for last example , when you do concatenation of s1 + "decode" , it actually creates a new object for "decode" and than "CodeDecode" , after the 2nd line there will be 3 objects in string pool.
Thanks for reading , correct me if you think differently.

[@suyashgupta6480]

please cover the most asked string coding interview questions.
Your content is awesome!!
Thanks for the hardwork

[@CodeDecode]

Thanks for showing us thr path Suyash. We will cover it in next video now 🙂🙂👍👍

[@manishagarwal1505]

Thank you for your Great work!! These videos are short and to the point and good to brush up concepts before interviews, keep up the good work!!

[@CodeDecode]

Thanks a lot Manish 🙂🙂👍👍

[@vasundharachintha5037]

This is really really helpful. Got all my doubts cleared related to Strings in java with this one.

[@harshsanmukhani5690]

Your concepts are very clear.. You are making really great videos for everyone. Pls do make the video on string coding questions as well. I want to suggest one example as well which i have been asked in my interview. I had to replace the vowel with the number of occurrences let me explain with example... Suppose there is a string as opportunity so i have to replace o with 2, u with 1 and i with 1 as well because, as you can see that the vowel has been replaced with the number of occurrence, i was also asked to iterate an string using map for this logic.
These type of questions can also clear many concepts and help to think big and build the logical thinking. I belive you will be making a video on that as well with great examples.
Thanks for making such a great content for everyone. Really appreciated. 😄😄🙌

[@CodeDecode]

Nice question harsh. Sure we will put video on that. Thanks 🙂🙂👍👍

[@nagapradeepvankayala7301]

Excellently covered end to end complete string concept...

[@CodeDecode]

Thanks 🙂🙂👍

[@gautamagarwal9761]

Excellent video! Just to the point and lots of important learnings to take away from this video! 👍👍

[@CodeDecode]

Thanks a lot

[@firdousbelim581]

Very very Nice Explanation mam. Please make series of java interview questions
Array. Loops. Oop and collection framwork.

[@priyankau1982]

hi mam..what a clarity! Am one of ur great fan...love to study your videos...
Please add string programming interview qwestions also..

[@CodeDecode]

It's live Priyanka. Thanks for suggestions. It really helps 🙂🙂

[@shyamalirani8478]

Appreciate your way of explaining everything is really unique and easily understandable

[@CodeDecode]

M glad it is Rani. Thanks a lot 🙂🙂👍👍

[@shwetabhat9981]

Thank You so much ma'am . Can't really appreciate you guys enough for all the efforts that you put in . Helps so so much for interviews , pretty much looks like interviewers too just pick up questions from your channel 😅 . Thank you again and as usual looking forward to many more videos .. 🙂

[@CodeDecode]

Thanks a lot Shweta 🙂🙂👍👍

[@ArjunSingh-is1bg]

Daily upload karo core java interview questions

[@CodeDecode]

Sure Arjun. We will try to do that. It's just that we all are working IT professionals. We have hectic sprints in agile format. It's difficult to spare time at late hours in night. But sure we wil try to put more videos. Sorry for the inconvenience. 🙂🙂

[@ArjunSingh-is1bg]

@@CodeDecode Hey Thank you for response i know about IT Working schedule , try to upload videos when you have free becoz i will regularly follows you

[@CodeDecode]

Yes will try to increase video frequencies 👍👍thanks for the nice suggestion Arjun 🙂🙂

[@hoshiyartewatia4959]

Hi There
I have one question here, if we create any object using new keyword then it will allocate memory in heap area and in SCP also. So that for further use it will pick that value from SCP means for reasubality.
Then my question is why we are storing that value in heap. Why we are allocating two memories for same value. Will it not consume the memory?
Please suggest.

[@testingvinod9545]

One que: if unattended 'code' created while creating obj then what is the use of unattended 'code' where we can use ?

[@mayurishinde4968]

Appreciate your way of explaining everything is really unique and easily understandable....Thank YOU😇

[@CodeDecode]

Thanks Mayuri ❤️❤️

[@shyamalirani8478]

please make one video on string coding interview questions

[@mdumarreza3072]

We need to some other videos Please make on the toString topic immediately
Topic should be string, stringbullder, stringbuffer , immutable and mutable
Etc

[@jainamdesai4230]

Thank you..very informative, helpfull tutorial with easy explanation and best examples 👍👌

[@CodeDecode]

Thanks Jainam 🙂🙂👍👍

[@evgeniyazaynulina1930]

Hello! Thank you very much for your videos!
I have one question, because I didn't quite catch while watching it. Why is an unreferenced object in String poll, which is created by the "new" keyword along with its value in heap memory, not collected by the Garbage Collector?

[@nidhichhabra2470]

very informative and useful video.

[@CodeDecode]

Thanks Nidhi

[@testingvinod9545]

Greatly explained ❤

[@CodeDecode]

Thanks

[@maksimmakarov9541]

thx a lot for explanation, watched a bunch of videos, your's was the best

[@CodeDecode]

Thanks 😇👍

[@kavitakumawat4929]

Ditto same questions were asked to me in one of the interview, 👌👌

[@CodeDecode]

Sure that Kavita. Thanks for letting us know and helping the community

[@indirarani2368]

Thank you for the detailed explanation, please help with my interview question, for String input “hello world” and increment counter=2 , output will be - “jgnnq yqtnf”

[@shubhamkhune3132]

Nice work mam, Plz you will make a video in string interview questions and program

[@CodeDecode]

Thanks Shubham 🙂🙂👍👍 we will do that in next video 👍👍

[@komalkasyap7104]

Mam, I have one question.
As u said in string constant pool, garbage collector doesn't work then how memory are managed in scp?

[@CodeDecode]

It will be cleaned as soon as your jvm stops

[@chinmaybhat9132]

But if I have an enterprise application where the app is never stopped, in that case will it not lead to memory issue?

[@nomadicnorthern]

Very informative. Thank you!

[@CodeDecode]

thanks

[@kasaramyogesh5166]

Can u make core and advance java video from scratch. It will be very helpful. I am suggesting ur videos to friends too

[@CodeDecode]

ua-cam.com/play/PLyHJZXNdCXsfqAkteaQ6JfZ_IHvxX-Hj3.html
Here you go Kasaram 👍

[@lavishdaksh6327]

Ma'am please make videos on string and array coding questions. I have given many interviews. Just because of array and string coding I couldn't clear any of them.

[@CodeDecode]

True Lavish. We will now start with coding interview questions on string n arrays

[@lavishdaksh6327]

@@CodeDecode Thank you 😊

[@vgasagar]

When was string constant pool introduced? Or is it der from beginning of java?

[@afzaluddinmd7755]

Awsome Explanation..Great job🎉

[@CodeDecode]

Thanks

[@pradeeppathak4533]

Thank you so much ma'am...it's ultimate explanation 🫡

[@CodeDecode]

Thanks pradeep

[@shashankmishara2946]

Yes mam make this type of video

[@CodeDecode]

Sure Shashank 🙂🙂👍👍

[@SaiTeja-ym2er]

thanks for sharing knowledge.

[@CodeDecode]

Thanks Sai 🙂🙂👍👍

[@manognajoshik8465]

I would like to suggest some topics on which I haven't found simple and easily understandable videos inspite of rigorous searching.
1) Executor framework
2) Microservices design patterns like CQRS using Axon framework, event sourcing.
3) Resilience4j for Microservices (specifically bulkhead. I couldn't find a single video which could make the concepts clear).
4) Reactive programming in java.
I am really waiting for these. And I very much trust it's possible for you alone to make us understand it from grass root level. I haven't found appreciable content on UA-cam. I am a regular follower of your content.

[@CodeDecode]

Sure we will put video on them👍🙂

[@hasimhsm9731]

Thanks for this valuable information

[@CodeDecode]

You're welcome

[@codingshashtra9091]

गुरू ब्रह्मा गुरू विष्णु, गुरु देवो महेश्वरा गुरु साक्षात परब्रह्म, तस्मै श्री गुरुवे नमः

[@CodeDecode]

❤

[@HSCodeStudio]

String S1 = "Code ";
String S2 = "Decode";
I just wanted to know that in this case how many objects are created? For string s1 in String Constant Pool. For, string s2 it will create an object in heap memory and the literal is stored in String Constant Pool as well is it right?

[@shubhamsurve3296]

Only in SCP..Not in heap .As it's not created with new keyword

[@ajith_shetty17]

Thank you

[@CodeDecode]

🙂🙂👍👍

[@pradeeppathak4533]

Ma'am plz tell me one thing , if SCp method is superior..then why do we use of new keyword object ?? Plz reply ..it is interview question

[@vishnushinde281]

Where does it says String s = new String("hello"); creates 2 objects one in Heap memory and another copy in string constant pool. Is there any proof to it (like in java doc)? I just want to clarify it. I am learning this concept from many coders saying it created two objects but how can i be sure it creates 2 objects?

[@avengerblack2042]

Make Video On Android Developer 1 Year' Ex Questions And Answers ..

[@CodeDecode]

Sure

[@saansimple]

Can you make core java course on udmey platform.

[@CodeDecode]

Sure we can do that saan 👍👍

[@MotoCruiseTamil]

@8:25 If it creates one more object in string constant pool, will it be a extra memmory consumption if i don't use it in the future?

[@saansimple]

Can you make video on Executor Service . Please

[@CodeDecode]

Ok sure we will do that 🙂🙂👍👍

[@saansimple]

Please make video on Executors

[@CodeDecode]

Ok we will put video on Executor framework Saan 🙂🙂👍👍

[@nrk7772]

That's why usernames & passwords can't be as Strings as they can be hacked from String constant pool 🙂

[@CodeDecode]

Yes i was about to cover that in next part 🙂👍

[@manognajoshik8465]

Awesome content as always.. waiting for Executor tutorial. There is really no good and understandable tutorial on this topic. It will be very useful for us. Request you to make a video on that topic.

[@CodeDecode]

Thanks a lot Manogna. Sure we will put video on threads soon 👍🙂

[@sabir7788]

Excellent question

[@CodeDecode]

Thanks

[@akashchoudhary5895]

Thanks a lot

[@CodeDecode]

You're welcome

[@dineshthedarkprince]

Thanks.

[@CodeDecode]

You're welcome

[@shubhamgore4320]

thank you ... please make a video for the array as well.

[@CodeDecode]

Thanks a lot for helping us in deciding priority Shubham 🙂🙂👏👏

[@mayuryadav1561]

Yes please create video on array interview questions

[@PraneshJoshi23]

Thanks for such awesome content 🙏🏻👍🏻

[@CodeDecode]

You're welcome pranesh

[@kameshlekkala1571]

I was recently asked this question in interview. Can you pease help me with answer. Question: what check is happening internally to decide to create new object in string constant pool or to return the reference of object. Also what design pattern is used by string.

[@kameshlekkala1571]

I have answered it as equals() method. But the interviewer asked me, if I have many literals in string constant pool then doesn't it take time to check equals() method against each literal to identify the matched value. I didn't have answer for it

[@supriyapandey9339]

Very informative video

[@CodeDecode]

Thanks Supriya 🙂🙂👍👍

[@vivekvivek-nn1xo]

One crappy interviewer asked me exactly same questions. She at the end said that these are most important fundas of java and didn’t selected me 🤨

[@CodeDecode]

Happens Vivek. It's part of our journey. Keep giving interviews and m sure u will clear it. 🙂🙂👍👍keep learning prepare well and things are just at one hand distance for u Man 👍👍

[@rishabhgupta5460]

If scp not eligible for garbage collection then is there a limit how many literals we can create bcz it also takes memory can you vlear it ?

[@rishabanand5318]

Please cover string coding interview questions

[@CodeDecode]

Sure 👍👍

[@shrikantsavita6614]

Please upload coding interview questions.... It's a request... Pls

[@CodeDecode]

Sure Shrikant. Thanks for helping us in deciding what's important next 🙂🙂👏👏

[@saansimple]

I will be great work for developers

[@CodeDecode]

Ok sure 👍👍🙂🙂

[@ahila5771]

If new keyword creates string in both heap and scp then qhat is the purpose of intern?

[@rajashekar-bu8xd]

Good video, keep up the good work

[@CodeDecode]

Thanks Raja 🙂👍

[@Shankar-lz7zs]

Nice explanation Mam

[@CodeDecode]

Thanks

[@akhileshkb9418]

Thnk u mam

[@CodeDecode]

🙂🙂👍👍

[@ShinuAjayakumar]

Really it is 38 degrees celsius in your area?

[@CodeDecode]

Yeah. It was hot here at that time. 🙂😀

[@ravikumarkuruba9587]

Thanks Medam

[@CodeDecode]

🙂🙂👍👍

[@antaraghosh19]

Thank you ...

[@CodeDecode]

Thanks Antara

[@venkateshlam8818]

Nice information..

[@CodeDecode]

Thanks 🙂

[@saaii9]

Can you make videos in Hindi or telugu aslo mam

[@CodeDecode]

🙂👍

[@rishiraj2548]

Thanks

[@CodeDecode]

🙂🙂

[@techNik94]

What happened in below case
In memory
String s="abc";
s="xyz";

[@hepsiba1237]

Hi Ma'am ..I have one project with errors wil u help to sort it out

[@CodeDecode]

What's the error ?

[@harshithac-e9n]

String a="abcdef";
String b="dghijk";
String c= "lmnopa"; can any one help me from these 3 strings to be compared and find duplicates in java8

[@nainagupta4949]

i didnt undersatnd why String str = new String("Decode") creates 2 object?

[@start1learn-n171]

Tq

[@venkataraghava3173]

nice exp

[@CodeDecode]

thanks

[@rishabhthakur7245]

thanx

[@CodeDecode]

🙂🙂👍👍

[@rishabhthakur7245]

This channel is really a true gem.... The way you explain things makes it to easier to understand, i guess i almost spend 5 hours a day learning over your channel .
Thanks allot for all of this efforts that you put❤❤

[@rishabhthakur7245]

@@CodeDecode i really don't know your name mam😊 but m sure this channel will grow as hell if you keep doing this🤗

[@shubhamkhune3132]

Plz mam soft copy provide this video

[@CodeDecode]

Sure. We will put how much are allowed in description below

[@AVINASHSHARMA-hu3vm]

Hi everyone please read this
Last March 2024 I layoffs from company and I have only 1 year experience in java developer. I try to many companies but not scheduled my interview please help me. it's been 2.5 months

[@fkb_ali]

very well explained. thank you! but can you please not scream