Altimetrik Java Developer Interview Questions and Answers

In Spring Boot, we use Spring Data JPA to connect to the database.

• Use @EnableJpaRepositories annotation in the main application class to enable JPA repositories

• Define datasource properties in application.properties or application.yml file

• Use @Entity annotation to define JPA entities

• Use JpaRepository interface to perform CRUD operations on entities

Component Scan is a feature in Spring framework that automatically scans and registers Spring components in the application context.

• Component Scan is used to automatically detect and register Spring components like @Component, @Service, @Repository, and @Controller.

• It eliminates the need for manual configuration of bean definitions in the Spring configuration file.

• Component Scan can be configured with base package(s) t...read more

throw is used to explicitly throw an exception in a method, while throws is used in method signature to declare the exceptions that can be thrown by the method.

• throw is used within a method to throw an exception, while throws is used in the method signature to declare the exceptions that can be thrown by the method

• throw is followed by an exception object, while throws is followed by the exception class names separated ...read more