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Kinfotech Backend Java Developer Interview Questions and Answers
Kinfotech Backend Java Developer Interview Experiences
1 interview found
Selected
I applied via Naukri.com and was interviewed before Apr 2023. There were 3 interview rounds.
(1 Question)
- Q1. What are JDK, JRE & JVM? Signify public static void main (String [] args). Difference between ArrayList and LinkedList?
- Ans.
JDK is Java Development Kit, JRE is Java Runtime Environment, and JVM is Java Virtual Machine. public static void main (String [] args) is the entry point of a Java program. ArrayList and LinkedList are both implementations of the List interface in Java, but ArrayList uses a dynamic array for storing elements while LinkedList uses a doubly linked list.
JDK (Java Development Kit) is a software development kit used for de...
(1 Question)
- Q1. Advantages of Spring Boot framework? Annotations in Spring or Spring Boot? What are Primary key and foreign key in SQL? What is @Qualofier in Spring Boot?
- Ans.
Spring Boot framework provides rapid development, easy configuration, and built-in features. Annotations simplify development. Primary key uniquely identifies a record in a table, foreign key establishes a relationship between tables. @Qualifier in Spring Boot is used to specify which bean to autowire.
Spring Boot offers rapid development, easy configuration, and built-in features like embedded servers.
Annotations in Sp...
(1 Question)
- Q1. What are your strengths and weaknesses? How would you handle pressure in your professional life?
Skills evaluated in this interview
Interview questions from similar companies
(2 Questions)
- Q1. What is the difference between HashMap and ConcurrentHashMap?
- Q2. HashMap is not thread-safe, but ConcurrentHashmap is thread-safe and allows concurrent access.
I applied via Walk-in and was interviewed in Nov 2024. There were 2 interview rounds.
Questions on string and arrays both are moderate level questions on hacherrank type for 20 marks
(2 Questions)
- Q1. Constructor chaining
- Q2. Hasmap and treemap
Backend Developer Interview Questions & Answers
Hummingbird Web Solutions
Anonymous
posted on 2 May 2023
I was interviewed in Apr 2023.
Verbal ability
Number series
Coding questions
(1 Question)
- Q1. Self introduction
Interview Preparation Tips
Selected
I applied via campus placement at National Institute of Technology (NIT), Warangal and was interviewed in Jul 2022. There were 3 interview rounds.
Their are 30 questions which one has to done in 30 mins
(2 Questions)
- Q1. Q1) About the project you have done
- Q2. Q2) some technical questions related to core Java
Interview Preparation Tips
Senior Backend Developer Interview Questions & Answers
Zazz IT Solutions
Anonymous
posted on 14 Dec 2022
(2 Questions)
- Q1. Screening Round on basics of the Role applied for
- Q2. Basic technical and HR questions
(1 Question)
- Q1. Technical round invloving overall work experience, coding questions and scenario based problems
Interview Preparation Tips
(2 Questions)
- Q1. What is the difference between abstract class and an interface in Java?
- Ans.
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, member variables, and methods, while interface cannot.
A class can implement multiple interfaces but can only extend one abstract class.
Abstract classes are used to define a common behavior among subclasses, while interfaces are used to define a contract for classes to impl...
- Q2. An abstract class can have method implements and abstract method, while an interface only contains abstract method (before Java 8) . Abstract classes support single inheritance, whereas interfaces support ...
- Ans.
Abstract classes can have both implemented and abstract methods, while interfaces can only have abstract methods. Abstract classes support single inheritance, interfaces support multiple inheritance.
Abstract classes can have both implemented and abstract methods, providing more flexibility in design.
Interfaces can only have abstract methods, promoting a more strict contract for implementing classes.
Abstract classes sup...
Java Developer Interview Questions & Answers
Thinkitive Technologies
Rupali Gaikar
posted on 8 Aug 2024
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
(1 Question)
- Q1. Oops Concepts ,Absrtraction,Polymorphism
(2 Questions)
- Q1. How does JVM optimize method calls?
- Q2. JVM just Just-In-Time (JIT) compilation, method inlining, and escape analysis for optimization.
I applied via LinkedIn and was interviewed in Apr 2024. There were 2 interview rounds.
Q.1 Pattern
1
*2*
**3**
Q. 2
write code to get sub array with max sum from given array.
(1 Question)
- Q1. Introduction Project Deatails Oops Concept Collection Exception Handling Abstract Class Functional Interface Spring Framework
Interview Preparation Tips
- Java
- Advanced Java
- SQL
- Data Structures
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