#1 Java interview Questions and Answers by Ashish Gadpayle Sir

This core java interview covered MNC level interview questions and answer.
This video is helpful for all fresher students who are preparing for technical rounds or want to learn Core Java Basics in detail.
About Interviewer:
Mr. Prashant Jha
Expert C, C++, Python, Django, Machine Learning
Trained 12K+ Students and 450+ Teachers
About Interviewee:
Mr. Ashish Gadpayle
Expert C, C++, Java, Python
National Level Winner in Programming & 2 times State Level Winner in Programming
Trained 14K+ Students and 150+ Teachers
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#corejavainterview #interviewquestionsanswers #howtogiveinterview

[@chandinirafiya1857]

1. Difference between jdk, jre, jvm.
2. Explain public static void main ().
3. Why java is platform independent.
4. Is java a pure object oriented.
5. Difference between heap memory and stack memory.
6. Difference between equals method and==
7. Why pointers are not used in java
8. What is jit compiler. Explain.
9. Difference between local variable and instance variable . Give example.
10. How to declare constant in java .
11. Can we declare class methods and variable as a constant
12. Difference between break and continue where we are used.
13. Define a class loader system.
14. Method overloading and method overwriting . Examples .
15. Difference between c++ and java.
16. Difference between final, finally and finalize.
17. Explain type casting in java .
18. Default value of local variable and static variable.
19. Define data types.
20. Define Exception handling in java.
21. What are default datatypes in java.
22.in char datatype it takes two bites but c++it takes one byte .why.
23. Can we overload main method
24 . Can we overwrite
25. Can we type cast .
26. Difference between assignment and initialisation.
27. What is unicode system.
28. Use of main method
29. Can we execute java program without main method
30. What is byte code
31.how many types of loops in java.
32. How many access modifiers in java .
33. Is it possible to declare array as a final.
34. What is jagged array

[@prapancham148]

Thank you ❤️

[@kshashankchauhan7549]

👍😍

[@dattatrayparande7184]

@@kshashankchauhan7549 Thanks yar❤❤❤❤❤❤

[@countingblessings369]

Thankyou

[@harshadaghotekar9662]

Thanku

[@nitishsah1060]

just now i have cleared an interview and all the questions on java which was asked to me is discussed here ...truly commendable

[@Help4CodeeLearning]

Thank you very much for your valuable feedback dear. Stay connected 🙏

[@neerajjhawar6906]

How can we get offcampus interview

[@nitishsah1060]

@@neerajjhawar6906 clear their apti and coding first

[@Ashutoshmishra47699]

@@nitishsah1060 does reference means Direct Interview if a program manager has referred you

[@jaanu.9773]

Is it 🤔

[@ytbshorts1741]

Need some more Java interview video! This is totally mind-blowing video.
Great job

[@Help4CodeeLearning]

Thank you. Stay connected. Will upload more

[@vidhyarajendran974]

You guys are doing such a great job. Thank you so much.

[@mowli3885]

such a great video which i ever seen thank you for making this kind of video

[@muskansoni1851]

Such a great video sir..... really appreciating this 🔥🔥🔥

[@Help4CodeeLearning]

Thanks for your feedback. Check next two videos also

[@rohit_x4097]

Excellent sir . By seeing this video, i got more confidence to my self

[@VAMSIKRISHNA-gv7kh]

First year engineer - add to watchlist
Second year - try writing all questions in one book and read once in a month
Third year - start preparing perfectly with examples and code
Fourth year - you will be places successfully

[@abhishekbparangi3399]

Very good, it's very helpful for the Fresher from non IT students, help us with more videos like this.

[@Help4CodeeLearning]

Thank you very much. Kindly share with your friends

[@AbhishekPatidar7]

literally i learned more than enough, A big thank u for that

[@Help4CodeeLearning]

Thank you very much for your valuable feedback

[@avinashwagh7761]

Never seen such a deep video on java..

[@Help4CodeeLearning]

Thank you very much.. stay connected and share with others

[@prasannakumarrachapudi]

waw wonderful conversation
Thank you so much for us for more vedious uploaded on HTML and LINUX

[@Help4CodeeLearning]

Thanks for your feedback

[@siddarajus7166]

Need some more videos like this it's great job Tq

[@Help4CodeeLearning]

Thank You
Definitely we will work on more videos

[@mr_o_p_]

great job

[@vaishnaviphalke3204]

Your team is doing good job...waiting for more lec on java

[@Help4CodeeLearning]

Must watch next session

[@poojadhiman370]

Most java topics covered in one video.Superb, please share more videoes

[@Help4CodeeLearning]

Thank you for your feedback

[@nikhil9703]

this is really a great content thank for this help sir really appreciated

[@Help4CodeeLearning]

Thanks for your feedback

[@Vithal_Nivargi]

Waw amazing conversation ❤️
Thank you please make one more video on Adavance level like spring boot and microservices

[@Help4CodeeLearning]

Yes soon we will upload

[@kattagroup2k23]

"Thank you for your helpful videos, sir. I would greatly appreciate it if you could create similar videos on Advanced Java and Data Structures and Algorithms."

[@Help4CodeeLearning]

Thanks for your feedback. Sure I'll share such videos

[@anirudhharaje7192]

Perfect💯 sir.. This boost my practically confidence

[@Help4CodeeLearning]

Thank you very much. Stay connected with us

[@Hari0205]

its very Great information to fresher go for the interview.....so helpful....

[@Help4CodeeLearning]

Thanks. Share it to your friends

[@arvindnayak8009]

Need more videos in java interview questions, and need django tutorials from zero to expert level

[@Help4CodeeLearning]

Thanks. Will upload more. Stay connected

[@codefamily]

Keep posting such amazing content sir😊😊

[@Help4CodeeLearning]

Thank you

[@umamahesh7246]

nice explanation sir . this video really helpfull for uss.. tq u

[@Help4CodeeLearning]

Thanks 🙏

[@sravanijakka2390]

Thank you soooo much for this kind of vidoes.....very very helpful .i am preparing for the interviews...

[@Help4CodeeLearning]

Thankyou so and stay connected. Share with your friends

[@LifeLineKVN]

You cleared many of my doubts and confusions.. thank you sir

[@Help4CodeeLearning]

Wow. Great.thanks for connecting with us

[@majidkhan5510]

Thank you sir...You are great

[@Help4CodeeLearning]

Welcome and thanks

[@mr_o_p_]

Thank you sir

[@Ash-nt3br]

Its veru helpful ..thanks 💞

[@Help4CodeeLearning]

Thanks

[@akshaytejale6233]

This was a very helpful session for me and also students.

[@Help4CodeeLearning]

Thanks for your valuable feedback

[@nileshtayade802]

Really Helpful Sir 👍

[@Help4CodeeLearning]

Thanks 🙏

[@gulabchandgupta5486]

great video lots of love sir 🥰🙏🙏

[@Help4CodeeLearning]

Thanks dear

[@roshanipatel4050]

Sir plz make more videos

[@khagendramohanta2127]

Really helpful 🙏🙏🙏

[@Help4CodeeLearning]

Thank you. Kindly share with others

[@karanamgiridharvenkatasrin8187]

good sir

[@pallavi9362]

great explnation

[@Help4CodeeLearning]

Thank you

[@pujayadav2083]

It's vary amazing sir .please make vedio on logical coding question.

[@Help4CodeeLearning]

Ok sure

[@nikitachorage3862]

The best video about interview questions I have watched till now.. really helpful thank you. And please provide technical interview questions on java

[@Help4CodeeLearning]

Thanks for your feedback. I'll add questions in description

[@annareddygayathri2399]

Excellent 👍

[@Help4CodeeLearning]

Thanks 🙏

[@vinoddhale2428]

Very nice 👌👍

[@Help4CodeeLearning]

Thanks

[@akash2626.-]

Great sir👍

[@Help4CodeeLearning]

Thank you

[@rahuldev-nx1qv]

Very useful .👍

[@Help4CodeeLearning]

Thank you

[@abhishekkumarsah3437]

Wow superb sir

[@Help4CodeeLearning]

Thank you 😊

[@TechnoSan09]

as a beginner in java i'd say most of it are very easy
questions are only from basics of java
not from any frameworks like for ex java spring

[@Help4CodeeLearning]

Yes . We will share soon on the same

[@musicblogvikasrockzeditz]

good questions covered

[@Help4CodeeLearning]

Thanks for your feedback

[@poonamugale4537]

Really great session sir..plz provide advance java ie spring, springboot hibernate questions answers

[@Help4CodeeLearning]

Yes
Soon we will upload videos

[@jyoti_mayi]

@@Help4CodeeLearning please sir provide advance Java questions...

[@pradeeppradeepkanaujiya8990]

Great sir

[@Help4CodeeLearning]

Thanks Pradeep., Share with others

[@BHARAT_TECH23]

Masterpiece

[@Help4CodeeLearning]

Thankyou

[@rishig2509]

Sir, if there is any interview regarding java, c++, DBMS, python etc please inform us...

[@hatilaprogrammer999]

Sir can you pls explain what is dependency Injection in java

[@arch-we7vb]

Great video sir . Sir can you upload a video about how to explain our project and what type of questions will ask by interviewer . My humble request pls upload it soon this will useful for many students.
Thank you.

[@Help4CodeeLearning]

Yes sure.

[@NaveenKumar-sm5kb]

Yes sir what type of questions asked by interviewer.
Please upload soon

[@rajukumaryadav5036]

THANKS SIR ..THIS IS VERY USEFUL FOR US .......PROVIDE PDF PLZ

[@Help4CodeeLearning]

Thanks. But we don't have PDFs

[@sabinaya2809]

Sir can you please explain the concept with real time example so we can easily understand .through this video I can clarify some topics tq so much sir.please do and post more video like this sir😊😊..

[@Help4CodeeLearning]

On what questions you need real time example. Please mention in comments. We will answer you

[@annujaiswal1980]

Nice sir

[@Help4CodeeLearning]

Thank you very much. Kindly share with your friends

[@RohitKumar-up6mx]

Really awesome content

[@Help4CodeeLearning]

Thank you 😊

[@Help4CodeeLearning]

Stay connected

[@pushkardhangar2004]

Really helpful sir

[@pushkardhangar2004]

Sir pdf provide kijiye

[@Help4CodeeLearning]

We don't have PDF

[@himanshanawarathna5931]

Thank you !

[@Help4CodeeLearning]

Welcome stay connected

[@CareerHirings]

thankyou sir

[@Help4CodeeLearning]

Welcome stay connected

[@Giriagroandfashion]

Love You Thanks

[@Help4CodeeLearning]

Thanks for your valuable feedback

[@sojwalgosavi7871]

This is something I wanted...

[@Help4CodeeLearning]

Thanks. Watch all the interview videos

[@sojwalgosavi7871]

@@Help4CodeeLearning Watched

[@badimelalakshmi1608]

Please do like these video in python sir.It may be useful

[@Help4CodeeLearning]

Python videos are available please check playlist

[@lokeshnath9879]

Practical implementation of string array question

[@Help4CodeeLearning]

String handling questions and answers are available 3rd video

[@chandinirafiya1857]

1. Difference between jdk, jre, jvm.
What is public static void main.
Why java platform independent

[@ankitcomputerup71]

Good ❤

[@Help4CodeeLearning]

Thanks

[@lokeshnath9879]

Make video on topic String array where we know idea about how to programming

[@Help4CodeeLearning]

It's available in 3rd video

[@Shiv-love]

Please make video on python language

[@Help4CodeeLearning]

Yes in next week, Python Interview video will be uploaded

[@mounika9365]

Please upload videos on multi threading, spring boot, restful web services and java 8 fatures

[@Help4CodeeLearning]

Yes sure

[@harshkhanna2412]

Can you make video with programs tricky questions like polymorphism, constructor overloading etc

[@Help4CodeeLearning]

Yes we will do

[@srinuvasulukamanuri2343]

what is super keyword in java

[@gauravnama2654]

any way we cannot create object form abstract class and intrface but abstract class contains constroucter but interface do not why? please tell me

[@RaviSharma-lu7xb]

Abstract class means to be extended by concrete class and in Abstract class Abstract method and normal method both can resides along with class variables, so to initialize these instances variable wherever child class using these Abstract class we require constructor to initialize abstract class variable before child class constructor while creating an object of child class.
But in interface by default every variable is static and final and once it initializes we can't change it, so interface doesn't have constructor. Because when we try to change it through constructor we get runtime error.

[@a_12_dipak_chaudhari29]

Plzz make video on collection framework

[@Help4CodeeLearning]

Yes sure

[@KamalSharma-fw3ko]

Sir, Please make C language Interveiw Question video

[@Help4CodeeLearning]

It's already available. Please check in video

[@dikshasinghal2468]

Sir if you guide us regarding technical round as well it will be helpful.. My 1 st round is not getting cleared.. Actually I am passout of 2019 batch and applying as a developer post.. But still idk why my technical round is not getting cleared

[@Help4CodeeLearning]

Ok. Search APS Microtech in google get a number and call .

[@mankalisrikanth7589]

ATB...for the interviews ...as im also 2019..passedout..and same in your situation.

[@tilakpaudel9933]

i am looking from Nepal. DSA is important for IT Carier so, Iam waiting your DSA tutorials

[@Help4CodeeLearning]

Share soon

[@saibharath793]

Actually as you explained about public, protected, default, private , they are access modifiers or access specifiers?

[@rocked789]

yeah those r access specifiers

[@kshashankchauhan7549]

@@rocked789 then what are access modifier's...?

[@rocked789]

@@kshashankchauhan7549 static and non static

[@gagan8281]

@@kshashankchauhan7549 Final , Abstract and static are non access modifiers

[@Mahi095]

Excellent interview questions for java all these questions are very useful as a freshers to a java interview can u please send the PDF

[@Help4CodeeLearning]

Thanks 🙏. Ok we will try for pdf

[@tec-h___m_h__d]

I hope this will be useful tq guys

[@Help4CodeeLearning]

Yes 👍.share with others

[@nandubankar6624]

Can have chances to ask intervier question about the collection or threads topic

[@Help4CodeeLearning]

Multithreading is already shared we will share about the collections soon

[@swethar9968]

Sir want to restart my career and having 5 yrs career gap bcoz of maternity and kids. So how tobmove in career

[@Help4CodeeLearning]

Ok. Call on 7558627586.we will guide you

[@karthikdevarakonda4922]

Python interview questions please

[@Help4CodeeLearning]

It's available check playlist

[@ashrikahamed_]

how RuntimeExeption class(Which is super) can catch ArithmeticExeption class type Exceptions?
Bcs the concept of inheritance is Every elements in super can be accessed by its subclass.
But in exceptions, RuntimeExeption class catches arithmeticExceptions?
How?

[@makewithmohit4644]

Why we are not write any method in abstract class

[@Help4CodeeLearning]

We can write method definition in abstract class and we can make method as abstract which definition will be provided by its child class

[@balushinde9500]

Sir only learning java do not learning other language so scope java in feature sir please reply

[@Help4CodeeLearning]

Others have also scope. Many frameworks are there who are dependent on java.os Java is also having huge scope

[@Journey_Palette]

add collection framework questions also

[@Help4CodeeLearning]

Yes planning

[@shubhampatidar1814]

Please upload program also

[@Help4CodeeLearning]

Ok we can try in next videos

[@akashkumarmaurya3921]

Really helpful keep it up but I have a question can u please tell me overriding concept why we are creating the same name object in parent class and child class is that required because I can create seperate method in class as creating in all the child class my question is why same name of method is created in parent class ... Hope uu get my question ❓ m soo confused revert back if you can thanks

[@Help4CodeeLearning]

When we are not satisfied with parents class method then we can override this function in child class and can give our own definitions.

[@premmogale3072]

Sir please make videos on advanced java

[@Help4CodeeLearning]

Yes will do. Stay connected

[@Pk-tw6li]

bro only jdbc comes under advance java

[@hihello6408]

ما هي اول لغة اتقنتها؟؟

[@Help4CodeeLearning]

First we have to learn about c programming then c++. After this you can start learning any Programming language

[@user-cr6jj8on7p]

Java is not pure Object Oriented:
because it supports primitive data types (like: int a;), we can write pure Object Oriented with the help of wrapper classes (using new keyword like: "Integer a = new Integer ();").
Am I right Sir?

[@hdjfjd8]

yes

[@bhagyashreedharmannavar8654]

Yes u r right.

[@Help4CodeeLearning]

Yes you are right

[@hemanthachari9916]

Difference between abstract and encapsulation

[@Help4CodeeLearning]

Why comparing abstraction and encapsulation

[@xx_ent]

Please try to give pdf of the session..

[@Help4CodeeLearning]

Okay

[@makewithmohit4644]

Main difference of collection and collections sir...?

[@Help4CodeeLearning]

Collection is a parent interface in collection framework and Collections is a utility class

[@kalluruchanukya282]

i want multithread and collections interview questions

[@Help4CodeeLearning]

It's available chec next videos

[@dikshasinghal2468]

Sir what is difference between public static void main and static public void main.
I was asked this question in my interview

[@zindgihiman7700]

There is no difference. Both are same work.

[@Help4CodeeLearning]

No difference. We can declare access modifiers any order. But java recommends public static void main

[@dikshasinghal2468]

@@Help4CodeeLearning thanks sir.. Maybe interviewer was checking my confidence by asking this are you sure.. Thanks for clearing my doubt

[@Help4CodeeLearning]

@@dikshasinghal2468 good. Hope you have watched this video

[@dikshasinghal2468]

@@Help4CodeeLearning yes sir before my interview I had watched this video.. And it is really helpful

[@rammohan4175]

No questions on collections and strings.. could have covered on that..

[@Help4CodeeLearning]

Yes sure

[@mahenderreddy1079]

How to code in java

[@Help4CodeeLearning]

Learn by online tutorials or join our live classes

[@MINDofMillionaire]

How customer use JRE????

[@Help4CodeeLearning]

While software installation we can simply install jre no need to jdk

[@CosicoJaime]

This is the same interview in cognizant.

[@Help4CodeeLearning]

Thank you very much for your feedback

[@rawat272]

Tomorrow is my IT test hope this will help +_+

[@Help4CodeeLearning]

Yes . Will be more helpful. Share experiences after interview

[@rawat272]

@@Help4CodeeLearning our group is winner .
Thanks sir for this qna ♥

[@akshatgupta7739]

Is this interview for fresher or experienced ?

[@Help4CodeeLearning]

Yes for both