android and iOS Developer Interview Questions and Answers

Dependency injection in Spring is a design pattern where objects are passed their dependencies rather than creating them internally.

• In Spring, dependency injection is achieved through inversion of control (IoC) container.

• It helps in decoupling components, making them easier to test and maintain.

• Example: @Autowired annotation in Spring is used for dependency injection.

Singleton design pattern ensures a class has only one instance and provides a global point of access to it.

• Ensures a class has only one instance.

• Provides a global point of access to that instance.

• Commonly used for logging, caching, database connections, etc.

Spring is a popular Java framework used for building enterprise applications.

• Dependency Injection

• Aspect-Oriented Programming

• Spring Boot

• Spring MVC