Candidate: [Candidate’s response, typically covering their experience, skills, and reasons for interest]

Interviewer: That’s great. Let’s start with some technical questions: Please Rate yourself on a Scale of 1 to 10 for your top skills

Java Questions and Answers

1. What are the differences between equals() and hashCode() methods?

• equals(): It is a method used to compare the equality of two objects in Java. By default, it checks for reference equality

  ]]> /frequently-used-annotations-in-spring-boot/ Thu, 18 May 2023 08:00:00 +0530 /frequently-used-annotations-in-spring-boot/ Frequently Used Annotations in Spring Boot

  When it comes to developing applications using Spring Boot, there are several annotations that are commonly used. Here are some of the most frequently used annotations in Spring Boot:

  1. @RestController

  The @RestController annotation is used to define a class as a RESTful controller. It combines the @Controller and @ResponseBody annotations, making it easier to create RESTful APIs.

  2. @RequestMapping

  The @RequestMapping annotation is used to map HTTP requests to specific controller methods. It allows you to define the URL path and HTTP method for handling the requests.

  ]]> /java-questions-and-answers/ Thu, 18 May 2023 08:00:00 +0530 /java-questions-and-answers/ Java Questions and Answers

  SOLID Design Principles

  SOLID is an acronym that represents a set of five design principles aimed at improving software design and maintainability. Here’s a brief description of each principle:

  1. Single Responsibility Principle (SRP)

  • A class should have only one reason to change.
  • It states that a class should have a single responsibility and should be focused on doing one thing well.
  • This principle promotes modularity and makes classes easier to understand, test, and maintain.

  2. Open/Closed Principle (OCP)

  • Software entities (classes, modules, functions) should be open for extension but closed for modification.
  • It suggests that code should be written in a way that new functionality can be added without modifying existing code.
  • This principle promotes code reusability, maintainability, and allows for easier integration of new features.

  3. Liskov Substitution Principle (LSP)

  • Subtypes must be substitutable for their base types.
  • It ensures that objects of a superclass can be replaced with objects of its subclass without affecting the correctness of the program.
  • This principle promotes code reuse and helps maintain a consistent and predictable behavior of objects in a hierarchy.

  4. Interface Segregation Principle (ISP)

  • Clients should not be forced to depend on interfaces they do not use.
  • It suggests that interfaces should be fine-grained and focused on specific client requirements.
  • This principle promotes decoupling, modularity, and prevents the problem of “fat” interfaces.

  5. Dependency Inversion Principle (DIP)

  • High-level modules should not depend on low-level modules; both should depend on abstractions.
  • It states that the dependency should be on abstractions rather than concrete implementations.
  • This principle promotes loose coupling, flexibility, and facilitates easier unit testing and modular design.

  Java Language Basics

  1. What is autoboxing and unboxing?

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