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Software Developer Java Interview Questions
4,192 software developer java interview questions shared by candidates
Say something about polymorphism in oops
As per my knowledge there are 2 rounds 1st round - written codding test 1. Write a program to find the duplicate elements in a given integers list in java using Stream functions? 2. Write a program perform (A+B)^2 using method overloading 3. Write a REST API in spring boot to registering a user. User can have name, age, gender,email fields. Specify the Entity class & User Controller After clearing in round 1 you will be called for round 2 2nd round One to One Technical Interview 1. How will we create API in spring boot ? 2. Validation of fields in Springboot? 3. What is Authentication and Authorization? 4. How much you will rate yourself in SQL? and so on
4 program palindrome, prime number
Contract between equals and hashcode
OOPs, internal working of hashmap and set, concurrent & synchronized hashmap, linkedlist, arraylist, set, treemap, hashcode & equals contract, program to find occurances of characters in string using hashmap
synchronization, static and non static variables, this and super,read write lock
1. What is a constructor? 2.explain interface?
The technical programming test was extremely difficult. I have been programming in Java or over 10 years, and solved lots of issues and built lots of apps. So, I was stunned to be asked these questions which I feel don't come up every single day in developing apps.
No real problematic technical questions asked ... just the very general Java questions ...
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