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Java Software Engineer Interview Questions
3,071 java software engineer interview questions shared by candidates
1) Basic core java questions (oops, collections, multithreading, exception handling). 2) Spring mvc and Spring core. 3) JPA
project details, Abstract class Interface, Internal working of Hashmap, polymorphism, String,
How we can dockerise the spring boot app? How to change legacy codebase to the modern code base. What to do if you were given to setup project from the scratch. What was you recent project at last organisation. Specific questions about docker. How to store very large files on git.
Previous project-related questions, and questions from resume.
written test from core java all small samll programmings some JDBC servlet question ablout ResultSet from which package.... programs: Fileoperation to read and write the distinct words in file convert String to integer with out parseInt() some sql queries by aplying some joins
Technical Round Basics of Java HR Round questions like Tell me about yourself, What do you know about the company etc.
What is the difference between monolith and microservice?
Interview didn't consist of a list of questions where I had to answer them like on a regular college exam. Instead we talked about assignment I did and during our review questions popped up and that's where I tried to give the correct answer. For example: 1. What is this principle called? 2. Why did you use this way, instead of the other? 3. Would it be better if you tried this instead of that? You get the picture :)
1st Technical round:- Basic concepts of Core Java Abstraction, Encapsulation, Access Modifiers, Scope of Default, Scope of protected, wrapper classes use, string, string builder, string buffer, final, finally and finalize difference, collections, hashmap, hashtable, IoC Container, @steriotype, Component of spring boot, criteria ApI, Hibernate session, arraylist, linkedlist, comparable and comparator, qualifire in spring, Actuator in spring Boot, JPA and Hibernate, Dependancy Injection. some scenario based question about jpa and hibernate, Array list program. 2nd Round:- Features of java8 which feature you used in your project recently, Hierarchy of Exception Classes, exception types explain each with example, Immutable classes in java and how can we create, Hashmap internal working, Hash Collision How to handle or avoid, @primary in spring boot, @responseentity, spring boot layers, @restcontroller and @controller difference, Dependency Injection how to achive, @autowired, Design Patterns, Microservices services, SQL Selection query. HR Round:- How do you know about our company, Salary Expectation, Notice Period
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