JPMorgan Java Microservices interview round 3|| Java8, Kafka, springboot, Cassandra interview questi

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[@chinmayabehera1452]

As jp morgan is a financial service company .. it will give more importance to multi threading and executer service , spring security and transaction management

[@harpreetvarma]

Static method synchronization & method synchronization are different. Static synchronization is synchronized using class literal. (My class.clasd) Synchronization on method is used using " this" . So both are different & multiple threads can use them simultaneously.

[@phanimadhuri4087]

Singleton design pattern is mandatory in JPMC interview.

[@coolfreaks68]

He he. They don't know much beyond singlton pattern. Singleton pattern sucks, and has no real industry usage. Most of the work is done through resource pools.

[@successtrader158]

To check the if two objects are same we can use hashcode ...simple

[@shankars4281]

Two different objects can also have same hashcode. So, we have to compare using == operator.

[@dips2805]

you can use hashcode method of Object class to verify the objects returned are same or not.

[@JavaTechies]

Yes, this will work if we want to compare the entire object, but if we want to compare on the basis of an is, name or some parameter then we have to override it

[@JavaTechies]

Thanks for your comment.

[@ghostneguz]

Just a small suggestion In all the interview videos I noticed that you are saying "basically" way too many times.. If you can work on it it would really help in creating a better communication thread

[@SingerChakra]

He asked if no hashcode method is overriden then how will hashmap behave.... Proper answer should be if hashcode is not overriden then it will take the by-default hascode of the object ... Thus no key will have same hashcode .. and index computation will be different for all keys ... Thus even though there are two same keys .. hashcode will vary and it will allow duplicate keys

[@SingerChakra]

And if equals method is not overriden then indexing will be proper and when two keys are same hashcode is also same but as there is no equals method ... Object wise comparision won't occur . It can include duplicate keys as well

[@sumitkumar-mj8gp]

Great interviews..Just restrict yourself to less use of word basically. It might get annoying for the interviewer.

[@JavaTechies]

Yes, thanks you can see the improvement in latest ones

[@gigsz2982]

One important tip - please don’t try to buy time and google questions in an interview… the interviewers are smart enough to know 😊 Thanks

[@JavaTechies]

Thanks

[@kumarrajakotakonda1351]

If we locked on block level then we can execute class levels simultaneously

[@JavaTechies]

Correct

[@kumars5330]

@Primary is same as @Qualifier..when ambiguous happpens on bean selection, if any bean configured with @Primary will get injected..assume there is no @Qualifier configuration

[@vishalsingh-dj6od]

You may refer this as well kzbin.info/www/bejne/faWmg3ulhJiGjLM

[@snehalparab83]

Such a helpful video , Thank you very much ! Just One question - What did you ask the interviewer the end ? I mean if its final technical round , we can ask about the role and everything , But for first technical round, what should we generally ask ?

[@JavaTechies]

Team culture, about project, role.

[@sasikanthyenugula1661]

you can verify the singleton by verifying the hashcode

[@JavaTechies]

Ok, thanks

[@shankars4281]

How? Two different objects can also have same hashcode. We should do something like, assertTrue(o1==o2);

[@sasikanthyenugula1661]

@@shankars4281 wherever the object that you are having hashcode logic you need to mention equals as well as that is hashcode equals contract. If it's same you can verify the members with equals method

[@Aj-gy9hj]

How many questions should answer to get selected in any company from which you have posted

[@JavaTechies]

70%

[@JavaTechies]

Its an average, it depends on requirements, urgency and communication with interviewer

[@Aj-gy9hj]

@@JavaTechies Thanks for the valuable information

[@shivaraju8405]

the explanation of .equals() and == is wrong. .equals() is used to compare the value only, whereas, == is used to compare the references only

[@PraveenKumar-uj2ih]

== Operator Used For Check the Memory Address Either Same or Not . equals() Method Is Used For Content Comparison . If It's Both Same, prints true Otherwise False

[@ashokkumarbiswal714]

No the default implementation of equals method which is present in object class compares the reference like the == operator does. But if you you will talk about the equals method which is present in String class , it compares the content.Because it is already overidden from object class to compare the content.

[@abhijeetrathore7016]

No offer, right ?

[@JavaTechies]

Ya

[@sanjeen2503]

how did you guess

[@abhijeetrathore7016]

I also take such interviews

[@akshaysingh2294]

Voice Is very low,please can you list down the Questions here so it would be a great help.

[@rexsam3134]

Listen at late night when there is no disturbance. I do for all videos after 12 am

[@sridevigrandhi5133]

What was the time span given for you between each round?

[@JavaTechies]

About a couple of days

[@PraveenKumar-uj2ih]

What Design Patterns Should Learn The Best? If Anyone Knows Please Drop names here. it Will useful to others. Thank you In advance

[@JavaTechies]

Only creational design patterns, and from microservices Saga and circuit breaker

[@tejachowdary309]

can you please let us know how to we prevent denial of service from happening ?

[@JavaTechies]

Didn't get the question

[@pankajkumar00001]

@@JavaTechies he is asking DoS attack

[@JavaEngProgram]

Whats salary jpmc offer

[@JavaTechies]

Jpmc has fixed bands so for 5 years they give between 18 to 28

[@aparnasaineni8861]

how many rounds of interview in JPMorgan.

[@SmilingAssassinGaming]

Good to have your husband/boyfriend at your side for quick hints, you got quick help regarding linkedhashset

[@sergiojimenez3445]

Yeah, that one looked a little bit suspicious haha. I think it was more like googling

[@kotiramamurthydavuluri1883]

You have learned singleton from your past interview. Nice job. I think you lost it in collections.

[@nithinroyal59]

Is this your manager round or technical round

[@JavaTechies]

Technomanagerial

[@djr4793]

Can you post videos for other rounds too

[@JavaTechies]

I have already shared all rounds of interviews that happened.

[@djr4793]

Ohk I will take a look.. Thanks

[@bandz4526]

Have you cleared the round?

[@JavaTechies]

No, I didn't get the offer

[@jaiamesar1924]

@@JavaTechies Any idea on why you didn't get the offer because your interview was good and you have given correct answers to all questions. 😅

[@JavaTechies]

@@jaiamesar1924 not exactly but 1 reason is notice period

[@vadluri_ravi]

@@JavaTechies How many days notice that you should serve in your company

[@nithinroyal59]

@@JavaTechies I have jp morgan manger round tomorrow. What they will ask in manger round generally.

[@surajmahato2557]

How many years of experience do you have in java?

[@JavaTechies]

5 years

[@dharmeshrathod5070]

basically

[@JavaTechies]

Basically thanks 🙏