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 😊
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?
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.
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 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 👍
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 🙂🙏
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.
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 👍👍
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
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 💙
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 💙😊
Really helpful.... I never seen these kind of vedios earlier.... Really appreciate your great work mam..... Please keep on gng.... Thank you so much .......
Yes I have a doubt So I have read that JIT compiler will increase the efficiency of interpreter. Interpreter will read code line by line , interpret it and then execute it. And If same method calls again It will again interpret and execute it hence , JIT compiler will create native method for that part and same method calls again then It will use that native method for that part. and also native methods are those methods which are in non java langauge. So, Is JVM using another language also internally? Am I thinking right ?? Just let me know and If not, kindly correct me please.
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 UA-cam world. It will really help everyone if u too enter into DSA training
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!
Hi. Method hiding - "If a subclass (child class) defines a static method with the same signature as a static method in the superclass (parent class), the subclass method conceals the one in the superclass". Method hiding occurs because static methods are resolved at compile time. Please, replace "same return type" with "same signature".
Question 3:- why string is immutable ? Answer :- the very correct answer i found from different source -> because of hashing related collection , key takes as string , so string is immutable . [correct me if im wrong ]
I'll have interview on Saturday and I've been to many as well but they all have different questions for this role. These questions were never been asked but I'll try to study this still.
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
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.
Could you please elaborate about Hit compiler. Based on what you said the jit compiler takes bunch of byte code and convert or compile to machine code to boost up the performance. So the doubt is does the interpreter has no role in the JRE
Hi I have a doubt, if Jit compiler converts byte code into machine executable code efficiently then why again interpreter should be there in the JRE. please clarify.
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...
public, private, protected are called access modifiers, then what are static, non-static are called? And what is the difference between access specifiers and access modifiers?
Imagine if someone gave you a set of tasks in German. Interpreter reads the tasks as he goes, translates each task into English, and then does the task. Every time he does a German task, he has to translate it again...even if he already did a similar task or the exact same task before. A JIT keeps often used tasks translated in English and refers back as needed. If a task is executed only once, it often does the same thing that an interpreter does. AOT compilers translate all tasks into English before executing them.
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: ua-cam.com/play/PLyHJZXNdCXscoyL5XEZoHHZ86_6h3GWE1.html
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
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?
I am a mechanical engineer and I have a desire to switch into IT industry, I am learning core Java as one of my friends suggested it. to understand all these exhaust me and after a while I am back on it again.is there any chance this industry could give me entry level opportunity?
Mam, you said you can call the static method by creating an object also, but you should not call like that, means is there any reason for not calling like that?
You can call static methods with class name hence you don't need to waste memory creating the object and then calling static methods. But that doesn't mean you cannot call the static methods the object. Interviewers usually trick you by asking this and people usually answer that error will come or you cannot call static methods with object.
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 😊
i will be waiting for that :) hope to hear from you soon 👍Alll the very best 👍👍
@@CodeDecode thanks
All the best
what happen have u selected or not?
That's a great news Manish... We really wish you all the best for your future....
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?
😊
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.
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 ❤️
how u prepare to crack it can u tell me plz..
Many congratulations Priya. Well deserved Girl. 🎊🎊🎉🎉🎉keep learning keep growing . So proud of you🎊🎊🎊🎊
@@CodeDecode Thank you so much ma'am for such a love ❤️ keep motivating us ☺️☺️
@@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 👍
Nice suggestion Priya! M glad you are not just focusing on shining alone, but pulling others too with you. Glad to see this ❤❤🙂🙂👍👍👏👏🎉🎉🎉🎉
Purpose: JIT compilers aim to improve program performance by compiling frequently executed parts of code into native machine code at runtime.
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 🙂🙏
That's awesome Priyanka. Congratulations 🎉🎉🎉🎉🎉. Keep working hard , you will reach all the heights very soon 🙃
Madam plz give me some tips.. Plz
Thanks to whole team. Because of your tutorial and important guidelines. I had cracked the 3 companies with satisfied package.
Many congratulations Sai. 👏👏👏👏well deserved Man. You really worked hard to achieve this milestone. 👍👍🙂🙂👏👏👏👏👏
www.youtube.com/@onlyinterviewquestions/shorts
I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback
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.
Thanks 😊
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 ❤️
congrats
That's such a great news Jeeja. Many congratulations to you. Keep Shining ⭐✨⭐✨⭐✨ girl
Congratulations
Most helpful video for interview as well as personal learning purpose.Voice is as clear as the explanation. Sabse Pehle at 14:29 😄
Thanks...
www.youtube.com/@onlyinterviewquestions/shorts
I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback
Like seriously these are concept making questions that work like blueprints to learn and differencing any language to other one.. hats off mam ❤️
Thanks Sidra 🙂👍
www.youtube.com/@onlyinterviewquestions/shorts
I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback
Omg I watched your video today morning before my interview I got exact same questions from this thank you ❤️
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 👍👍
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
may be interviewer also watched the same video so to decide which questions to ask in interview 😂😂
@@abhishekseth8008 😂😂may be.
@@abhishekseth8008 😁😁😁😅😅😆
This is some top class teaching. One of the best java explainers that I have came across.
Thanks Durga 👍👍
Great Content & precise explanation! These are all the questions I faced in the interviews. It really helps me & boosting my confidence! Thanks a ton!
Thanks priyanka 👍👍. M glad it's useful . Keep learning keep growing 👍👍
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 😁😁
Hi Karthik, did you get offer?
Wow ... Wednesday Eve i am having an interview.. thanks a lot fr this clarity ❤
All the very best 👍👍👍👍 do well.
Great. Nicely explained without any kind of nonsense
Thanks Naveen 🙂👍
surely the questions you have selected in this video are all very important, thanks for making such an informative video.
Thanks Shameem 🙂👍
www.youtube.com/@onlyinterviewquestions/shorts
I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback
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 💙
ua-cam.com/play/PLyHJZXNdCXsfqAkteaQ6JfZ_IHvxX-Hj3.html
This is almost all what u need Shivam👍. All the very best 👍👍 Prepare well 👍👍
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 💙😊
All the very best Shivam 🙂🙂👍👍.
Straight to the point. Clearly explained. Thank you so much.
M glad you liked it
www.youtube.com/@onlyinterviewquestions/shorts
I am creating some nice content for Java interviews. Could you please review. Appreciate your feedback
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
Many congratulations Kuntal 🎊🎊keep learning keep shining Girl ⭐✨⭐✨
Thanks buddy, i got 7L package
Great all the best for your future 😊😊
@@CodeDecode 🫶🙏
What company bro ? Any interview questions please share
Kam hai bahut
@@GyanSingh-u9m2uTera hain kya 3 ka bhi nahi hoga tuzko package logo ko nam rakhta Hain
Thank you so much for this series.. It helped to get me job at CITI
You're welcome Shivani and all the very best for your future endeavours
thanks a lot for explaining all the Questions in such a great way ..
Thanks gajanan 🙂👍
Most imp questions collected thanku for the exlanation
Thanks 🙂🙂
Really helpful.... I never seen these kind of vedios earlier.... Really appreciate your great work mam..... Please keep on gng.... Thank you so much .......
Yes I have a doubt
So I have read that JIT compiler will increase the efficiency of interpreter.
Interpreter will read code line by line , interpret it and then execute it. And If same method calls again It will again interpret and execute it
hence , JIT compiler will create native method for that part and same method calls again then It will use that native method for that part.
and also native methods are those methods which are in non java langauge.
So, Is JVM using another language also internally?
Am I thinking right ??
Just let me know and If not, kindly correct me please.
14:49 The way you say "similar" got me!
Thank u mam for covering these all questions .. one of the best video on java 👏..
Thanks a lot 😇😇👍
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 UA-cam world. It will really help everyone if u too enter into DSA training
Thanks Pallavi. Sure will take that in count👍
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!
Thanks for helping others by contributing your experience 🙂👍
Maam,very good explanation with basics , thank you so much maam
You are welcome pavan....
Valuable information and very important questions. Thanks for making such a lovely video....
Thanks Sriraj 👍👍🙂🙂
Wonderful! It will help me for my upcoming Java developer interview .
Glad to be helpful Mike 🙂👍
Hi. Method hiding - "If a subclass (child class) defines a static method with the same signature as a static method in the superclass (parent class), the subclass method conceals the one in the superclass". Method hiding occurs because static methods are resolved at compile time. Please, replace "same return type" with "same signature".
👍👍
Question 3:- why string is immutable ?
Answer :- the very correct answer i found from different source -> because of hashing related collection , key takes as string , so string is immutable . [correct me if im wrong ]
Very nice and informative...which i have never seen anywhere. Thank you so much. Its very helpful to me
Thanks 👍👍
@@CodeDecode Such a Nice explanation . Ma'am can you plz do a complete tutorial on Core Java. It would be very helpful..
I'll have interview on Saturday and I've been to many as well but they all have different questions for this role. These questions were never been asked but I'll try to study this still.
ua-cam.com/play/PLyHJZXNdCXsfqAkteaQ6JfZ_IHvxX-Hj3.html
Just one video will not cover all possible java questions Pb Bodino. Please prepare well 👍👍
Best place to learn JAVA love it
Thanks 👍
Your videos are amazing. it is helping me a lot for interview preparation. I liked subscribed your channel.
Thanks a lot Kiran 🙂👍👍
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
Thanks Akanksha. Many congratulations on clearing your interviews🎉🎉 keep learning keep shining 🌟🌟
Thank you jee for your video, bohot acha hai aur kaafi useful thi! subscribed!!
You're welcome
Yes, please more interview questions for java and JavaScript. Thank you.
Sure 👍
Straight to the point, lot of information covered and it's quite useful for interviews.👍
Thanks Priya 👍
I watched this video before every interview.. good understanding and love you voice ❤️
Thank you so much for this amazing informative video.... We need more content....
sure we will create more
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
Thanks a lot 🙂🙂👍👍. Keep learning keep shining 🌟🌟🌟🌟
Very good questions and answers covered
Thanks Ankush
Hi Ankush, did you get offer?
You have fabulous speech🎉 of course great content as well. Outstanding.. Keep uploading ❤
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
Sure Shivani, we will do that 👍🙂
CAN YOU MAKE A VIDEO ABOUT FULLY JAVA INTERVIEW TOPICS WHICH WILL IMPORTANT ?
Great video mam.. thankyou soo much.
😊😊👍👍
Thank you so much maam. You teach very well🙏🙏
Thanks Pratham 🙂👍
All of your videos I have seen it is super
Thanks 🙂
Thanks ma'am Very Appropriate Interview Questions and Answers.
Wow very informative thank you mam
Thanks 🙂
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.
Many congratulations on clearing your interviews Jaya. 👏👏👏🎊🎉🎊🎉. Glad to see you this happy and confident. Keep rocking Girl 👏👏👏👏
Thank you so much mam! I got a job offer because of you.
❤️❤️ well deserved man. Keep learning keep shining as always 🌟🌟
Learnt so many new things today....a big thank you !!
Any time Akash 🙂👍
Your imformative videos helping me alot
🙂🙂Thanks Rohit 👍🙂
Thank you very much Very help for Interview
Could you please elaborate about Hit compiler. Based on what you said the jit compiler takes bunch of byte code and convert or compile to machine code to boost up the performance. So the doubt is does the interpreter has no role in the JRE
JIT is nothing but interpreter
@@nidhipatil7187 JIT is a complier right? not an interpreter.
Singleton explained very nicely. Thanks for video👍
Hi
I have a doubt, if Jit compiler converts byte code into machine executable code efficiently then why again interpreter should be there in the JRE. please clarify.
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...
I am glad you liked it. Will upload the video in exception handling soon.
You faced these questions as fresher ???
@@Santosh-Kumar-D no, as a experienced
@@ankita6113 Previosly @Amdocs,now in CSG
@@CodeDecode) let ll) l
public, private, protected are called access modifiers, then what are static, non-static are called? And what is the difference between access specifiers and access modifiers?
Static is a key word in java
No difference at all. They are the same 🙂
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.....✌✌☺☺☺
Sure will upload more videos.
We do have a playlist for all Java questions. Please do check that.
@@CodeDecode Thank you
Thank you dear for such a great video.. Very helpful to brush up your skills.. ❤
Thanks Dipali 🙂👍
14:02 override the readResolve() and return single_instance to retain Singleton behavior at time of Serialization.
Anand, did you get offer?
Nice set of questions. Thanks ❤
Thanks
Thanks a lot mam ..😁, keep making such videos
You're Welcome..
Very well explained...looking forward to watch and learn more on java
Sure 👍
Imagine if someone gave you a set of tasks in German. Interpreter reads the tasks as he goes, translates each task into English, and then does the task. Every time he does a German task, he has to translate it again...even if he already did a similar task or the exact same task before. A JIT keeps often used tasks translated in English and refers back as needed. If a task is executed only once, it often does the same thing that an interpreter does. AOT compilers translate all tasks into English before executing them.
Thanks team for the wonderful work, it really helps.
Thank you for your video. Very helpful
Thanks 🙂🙂
Just wow content 😀
Thank you!
Thanks Sagar 🙂👍
Tanks for ur Video.. its very helpful to prepare For interview so do more interviews videos
Sure 👍 thanks 👍👍
Nice but it would be great if you could add examples of code while explaining it.
Hi Asad,
Please check other videos where we have explained using examples ...
A great great video thank you very much
You're welcome
One of the best video. If possible please make more.
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: ua-cam.com/play/PLyHJZXNdCXscoyL5XEZoHHZ86_6h3GWE1.html
@@CodeDecode yaa after watching this i went through all and Just loved it. 🧡
@@CodeDecode one request if you can make videos on awt swing applets
M glad you find it helpful
Sure once m done with spring hibernate db core Java , will move to then too
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
M glad that it's helpful . Sure will cover them with part 2 of core Java
Thanks for replying, hope to see the part 2 soon
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?
Thanks for writing back Venkatesh 👍much appreciated.
Yes will upload that soon 👍👍
Any luck switching to Java Development?
I'm also a manual tester and would need your guidance on how to switch career paths
yes most of the questions above were asked by me in the java developer interview.
Been there. Done that 🙂🙂🙃🙃👍👍thanks for writing back to us sai 👍👍👍👍
Thanks for sharing the knowledge!
You're welcome Mahendra
Singleton is one instance in one JVM.
So if I run the same program twice or thrice in a single JVM, there will still be only single instance?
Yes
Much appreciated... Bang on target...
Thanks deeptiranjan
Thank you mam you are helping a lot 🙏🙏🙏🙏
you're welcome Rajendra
Thanks nice explanation very helpful ☺️
Thanks Prasad 👍
Hi did you get offer?
Awesome Explanation, Thank you so much for sharing this useful knowledge for interview purposes.
Thank you may be this will be help me in future
Surely it will help
soo much to learn from this video..
thank u mam
Thanks Shubham 👍👍👍👍
Pls take session on Threads Thread pool Executor etc complex examples
Sure will cover in next upcoming parts
I am a mechanical engineer and I have a desire to switch into IT industry, I am learning core Java as one of my friends suggested it. to understand all these exhaust me and after a while I am back on it again.is there any chance this industry could give me entry level opportunity?
Great video with amazing explanation.. 👍👍
Thanks Ayesha 😀
I got confident after watching the video that I can crack the interview
All the best sushaanth
Nice video but can be improvised. The answer for singleton was not completed, you can add the impact of multithreading on getInstance method.
This is the part 1 of Core Java. Many more are yet to come. We will cover that in those parts. Please stay tuned.
Great work, helped alot, kudos to hard work!
Thanks for the nice words
Very helpful video thanks a lot 👍
Thanks nitu. Keep learning keep growing. All the very best from team code decode 👍👍
Superb coverage !!! ... Can i get these questions compiled in single document? It will be great help...
Sure we will provide it soon 🙂🙂
Mam, you said you can call the static method by creating an object also, but you should not call like that, means is there any reason for not calling like that?
You can call static methods with class name hence you don't need to waste memory creating the object and then calling static methods. But that doesn't mean you cannot call the static methods the object. Interviewers usually trick you by asking this and people usually answer that error will come or you cannot call static methods with object.
@@CodeDecode ok thanks