Insolutions Global Java Software Engineer Interview Questions and Answers

A user microservice to retrieve data from h2DB

• Create a REST API endpoint to handle user requests

• Use JDBC to connect to the h2DB and retrieve data

• Implement caching to improve performance

• Ensure proper error handling and logging

• Secure the API with authentication and authorization

To create thread singleton, use double-checked locking or enum.

• Use double-checked locking to ensure only one instance is created

• Alternatively, use enum to create a singleton with thread safety

• Ensure proper synchronization to avoid race conditions

Spring Boot Starter POM is a parent POM that provides a set of dependencies for Spring Boot applications.

• It includes commonly used dependencies such as Spring Framework, Spring Boot, and Spring Data.

• It simplifies the process of configuring and deploying Spring Boot applications.

• Developers can add additional dependencies to the POM file as needed.

• Examples of Spring Boot Starter POMs include spring-boot-starter-web, spri...read more