Understand the foundational mechanics of the Spring Framework: Inversion of Control (IoC), ApplicationContext, Dependency Injection, Bean Scopes, Aspect-Oriented Programming (AOP), and Spring JDBC Abstraction.
Spring is the premier framework for building enterprise Java applications. By decoupling object creation from business logic through Dependency Injection, Spring enables modular, testable, and loosely-coupled application design.
This course explores the underlying container mechanics of Spring ApplicationContext, Bean definitions, lifecycle callbacks, Aspect-Oriented Programming for cross-cutting concerns (logging, security, transactions), and Spring's declarative transaction management.
Understanding IoC container. ApplicationContext vs BeanFactory. Java Configuration (@Configuration, @Bean) vs Stereotype Annotations (@Component, @Service, @Repository, @Autowired, @Qualifier).
Singleton vs Prototype bean scopes. Bean instantiation, Dependency Injection, BeanPostProcessor execution, @PostConstruct and @PreDestroy lifecycle callbacks.
Concepts of AOP: Aspect, JoinPoint, Pointcut expressions, Advice types (@Before, @After, @Around, @AfterReturning, @AfterThrowing). Modularizing cross-cutting concerns.
JdbcTemplate for boilerplate-free SQL execution. Declarative Transaction Management with @Transactional, Isolation levels, Propagation behaviors, and Exception rollbacks.
