Spring and Spring Boot Tutorials

Tutorials on the Spring Framework and Spring Boot for Java developers, with every example compiled and run on the current releases (Spring Boot 4 and Spring Framework 7, on Java 25). The series starts with the Spring core - the IoC container, beans, dependency injection, scopes and the bean lifecycle - and continues with Spring Boot, REST APIs, data access with Spring Data JPA, Spring Security, testing, and production topics.

In case you are new to Spring, start with What is Spring? Spring Framework vs Spring Boot Explained, then read the Spring core tutorials in order: the IoC container, declaring beans, dependency injection, bean scopes, the bean lifecycle, choosing between beans and SpEL and @Value.

Then continue with Spring Boot: create your first Spring Boot application with Spring Initializr, see how auto-configuration works and what starters contain, configure the application with application.properties or application.yml, @ConfigurationProperties and profiles, control logging, speed up development with DevTools, and package the application as an executable jar.