Spring Boot Setup & Configuration
12 lessons in this section of the Spring Boot tutorial. Work through them in order, or jump to the one you need.
- 1.Creating Spring Boot Project
There are four ways to create a Spring Boot project — Spring Initializr web UI, IDE integration, Spring Boot CLI, and manual setup.
- 2.Maven Setup
Maven is the most widely used build tool for Spring Boot applications.
- 3.Gradle Setup
Gradle is Spring Boot's second officially supported build tool — faster than Maven due to incremental builds and build caching, with a concise Groovy or Kotlin DSL…
- 4.application.properties
application.properties is Spring Boot's primary configuration file.
- 5.application.yml
application.yml is an alternative to application.properties that uses YAML syntax — a hierarchical, human-readable format that eliminates the repetitive key prefixes of…
- 6.Externalized Configuration
Externalized Configuration is Spring Boot's mechanism for separating configuration values from application code.
- 7.Command Line Arguments
Spring Boot treats command-line arguments as the highest-priority property source — they override application.yml, environment variables, and everything else.
- 8.Environment Variables
Environment variables are the standard mechanism for injecting secrets and environment-specific configuration into Spring Boot applications at runtime — without…
- 9.Custom Configuration Properties
Custom Configuration Properties let you define your own type-safe, validated, IDE-autocompleted configuration keys using @ConfigurationProperties.
- 10.@ConfigurationProperties Annotation
@ConfigurationProperties is Spring Boot's mechanism for binding a prefix of properties to a strongly-typed Java class.
- 11.Value Annotation
The @Value annotation injects property values, environment variables, and Spring Expression Language (SpEL) expressions directly into Spring beans.
- 12.Banner Customization
Spring Boot displays an ASCII art banner at startup — the Spring logo by default.