Questions: Background -> current technologies Features of spring boot and its adv How autoconfiguration works in spring boot How do you create spring boot app If i defined sql but did not add any properties to connect to db what would happen What props are to be given -> this is the autoconfig he was referring to earlier @componentscan - what does this do @springbootapps ? How do you handle properties Different types of properties for diff files -> profiles related Q How do you deploy apps in springboot Jnuit test cases Why do you write junit test cases @restcontroller @service & @repository? What will happen if you do @service instead of @repository How do you test your application - rest service - postman Which http protocol to use to update db to change an attribute, how do you achieve this Patch & put protocols Core java Diff btw primitive and non-primitive What are all the primitive data types Why are we defining string in 2 ways. How does memory work in these 2 cases Why is it maintaining at 2 places? Where will be a new object stored- heap or stack? How do you handle exception in java What will happen if we only do try or finally, but do not do catch What is diff between error and exception How do you improve on errors, how do you handle errors, what are the errors faced till now, how did you resolve them, how do you rectify ‘out of memory error’ What are the different types of exceptions you have faced till now What is order of exception in java, which is highest Use of collections in java What are different types of collections you used till now When do you use set and map How is key stored in hashmap

Exception is the mistake of programmers and those are recoverable... Error are not mistakes of programmers, Errors are generated by system configuration mistakes, basically Errors are not recoverable.

J unit purpose: to cover all the scenerios in at the time of bug fix.means at the time of bug fixing sometimes existing features will loss

Error indicates a serious problem that mainly occurs due to the lack of system resources, it occurs at run time. Error cannot be caught or handled. Example- Java.lang.StackOverFlow, java.lang.OutOfMemoryError Exceptions are the problems which can occur at both runtime and compile time. It mainly occurs due to the code written by the developers. Exception can be recovered by using the try-catch block and throws keyword. There are two types of exceptions i.e. checked and unchecked. Unchecked Exceptions : ArrayIndexOutOfBoundException, NullPointerException, ArithmaticException Checked Exceptions : SQLException, IOException

PUT, PATCH etc.. are not protocols. They are verbs in HTTP protocol.

Thanks

what if we explain the rest api flow from swagger documentation

There is no question from Microservices.

SIR ? in IT after 6 years of exp who calls SIR ?

why interviewer sounds arrogant ?

Any interview isn't complete with writing program 😁😁

selected??