LNT Infotech java interview questions and answers | spring boot interview questions

Spring boot interview questions
java interview questions
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Java Techies

[@shankars4281]

@8:00 serialisation creates new object with same values. If you serialise object o1 to o2, o1 == o2 will be false, but o1.equals(o2) will be true

[@ramt9447]

@3:40 two strings comparision with equals ignore case no need of hashcode and equals.acc to my knowledge hash code and euals for checking two objects same or not and in hashmap key as object.in this two scenarios we will use

[@JavaTechies]

Thanks

[@chetanbavaskar877]

Only equals will do here , as it has not overridden Employee class has not overridden equals method then it will basically use the method equals() of object class which is superclass for every object , which basically does the reference equality check , hence it will be false

[@ramtirumala5386]

@@chetanbavaskar877 above my comment not related to answer true or false .Just saying how we will compare of two strings and two objects

[@chetanbavaskar877]

@@ramtirumala5386 yes got it just for information I have posted it

[@amolmandlik]

In spring boot application we can call stored procedure by creating SompleJdbcCall class object

[@JavaTechies]

Thank you so much, I will take a look and improve my answer

[@chandanchaudhari3130]

@amol can we use jdbctemplate?

[@chetanbavaskar877]

Optional.ofNullabe() checks the condition inside the ofNullable() if it’s null then it will be null and if not it will be not null and then using .isPresent() we can check if it’s null or basically value is present and get that value using .get()

[@RAJU9622]

You no need to create two application properties for connecting two databases. In the properties you can define data source and second data source need to configure.

[@JavaTechies]

Ok, thanks. Let me check

[@rexsam3134]

@@JavaTechies Raju is right
Answer given is out of context

[@sergiojimenez3445]

How many interview rounds usually are in the selection process? I mean in general not only in this specific company

[@rexsam3134]

Was his answer correct for Volatile, removal of duplicate?
Many have not worked or even aware of JSP Servlets
Jboss is not supported. Use provided during compile time and for tomcat related web components files

[@JavaTechies]

Not sure, thanks

[@chetanbavaskar877]

For Singleton class:
create static the instance of that class itself
Create a private constructor so that it we can’t create object using it
Create a method which if the instance is null then always return new object of that singleton class.
To make it thread safe inside the synchronised block add the if condition of null as well

[@shaikmansoor1868]

🎯

[@Ravikumar-gj6qw]

Waste company after joining With mindtree mindtree frauded by not providing offer letters to candidate's

[@JavaTechies]

Thanks for letting our viewers know about it, thank you

[@abhinandeshwar6335]

Kitne ads bhai

[@JavaTechies]

Middle me nhi h band kar diye

[@AngelOfDeath943]

selected?

[@JavaTechies]

Yes

[@adityajasood4891]

@@JavaTechies package range?