Managed Components 120 1.10.1. @Component and Further Stereotype Annotations 120 1.10.2. Using Meta-annotations and Composed Annotations 120 1.10.3. Automatically Detecting Classes and Registering Bean 1.10.8. Providing Qualifier Metadata with Annotations 135 1.10.9. Generating an Index of Candidate Components 136 1.11. Using JSR 330 Standard Annotations 137 1.11.1. Dependency Injection with @Inject Standard Equivalents to the @Component Annotation 141 1.11.3. Limitations of JSR-330 Standard Annotations 143 1.12. Java-based Container Configuration 144 1.12.1. Basic Concepts: @Bean and @Configuration

importance of writing contracts and checking them at run time How to unit test contract-checking annotations (CCAs) How noexcept interacts with unit testing of CCAs. We will go over everything twice! ## pop_back(); // ASSERTION FAILURE: Precondition violation ## Contract-checking Annotations (CCAs) The C assert macro in the header • Homebrew or $ 3^{rd} $ party macro libraries libraries PRECONDITION (cond), POSTCONDITION (cond) ASSERT (cond) Upcoming C++ contract annotations (study group 21) [pre: cond], [post: cond] or pre{cond}, post{cond} [assert: cond] or assert {cond}

1 1.1. Requirements ..... 1 1.2. Extensions ..... 1 1.3. Null-safety ..... 2 1.4. Classes and Interfaces ..... 3 1.5. Annotations ..... 3 1.6. Bean Definition DSL ..... 3 1.7. Web ..... 5 Kotlin's clever type inference allows for shorter syntax. #### 1.3. Null-safety One of Kotlin's key features is null-safety, which cleanly deals with null values at compile time rather than bumping Java does not let you express null-safety in its type-system, the Spring Framework provides null-safety of the whole Spring Framework API via tooling-friendly annotations declared in the org.springframework

1 1.1. Requirements ..... 1 1.2. Extensions ..... 1 1.3. Null-safety ..... 2 1.4. Classes and Interfaces ..... 3 1.5. Annotations ..... 3 1.6. Bean Definition DSL ..... 3 1.7. Web ..... 5 Kotlin's clever type inference allows for shorter syntax. #### 1.3. Null-safety One of Kotlin's key features is null-safety, which cleanly deals with null values at compile time rather than bumping Java does not let you express null-safety in its type-system, the Spring Framework provides null-safety of the whole Spring Framework API via tooling-friendly annotations declared in the org.springframework

Adding Classpath Dependencies Writing the Code The @RestController and @RequestMapping Annotations The @EnableAutoConfiguration Annotation The “main” Method Running the Example Creating Auto-configuration Understanding Auto-configured Beans Locating Auto-configuration Candidates Condition Annotations Class Conditions Bean Conditions Property Conditions Resource Conditions Web Application Conditions Creating Your Own Starter Naming autoconfigure Module Starter Module 50. Kotlin support Requirements Null-safety Kotlin API runApplication Extensions Dependency management @ConfigurationProperties Testing Resources

Adding Classpath Dependencies Writing the Code The @RestController and @RequestMapping Annotations The @EnableAutoConfiguration Annotation The “main” Method Running the Example Creating Auto-configuration Understanding Auto-configured Beans Locating Auto-configuration Candidates Condition Annotations Class Conditions Bean Conditions Property Conditions Resource Conditions Web Application Conditions Your Own Starter Naming autoconfigure Module Starter Module 48. Kotlin support Requirements Null-safety Kotlin API runApplication Extensions Dependency management @ConfigurationProperties Testing

Dependencies - Writing the Code - The @RestController and @RequestMapping Annotations - The @EnableAutoConfiguration Annotation - The "main" Method Auto-configuration Understanding Auto-configured Beans Locating Auto-configuration Candidates Condition Annotations Class Conditions Bean Conditions Property Conditions Resource Conditions Naming autoconfigure Module Starter Module 49. Kotlin support Requirements Null-safety Kotlin API runApplication Extensions Dependency management @C

Dependencies - Writing the Code - The @RestController and @RequestMapping Annotations - The @EnableAutoConfiguration Annotation - The "main" Method Understanding Auto-configured Beans Locating Auto-configuration Candidates Condition Annotations Class Conditions Bean Conditions Property Conditions Resource autoconfigure Module Starter Module 48. Kotlin support Requirements Null-safety Kotlin API runApplication Extensions Dependency management @C

Dependencies ..... 19 11.3. Writing the Code ..... 19 The @RestController and @RequestMapping Annotations ..... 20 The @EnableAutoConfiguration Annotation ..... 20 The "main" Method Auto-configured Beans ..... 182 47.2. Locating Auto-configuration Candidates ..... 182 47.3. Condition Annotations ..... 182 Class Conditions ..... 183 Bean Conditions ..... 183 Property Conditions ..... Starter Module ..... 187 48. Kotlin support ..... 188 48.1. Requirements ..... 188 48.2. Null-safety ..... 188 48.3. Kotlin API ..... 189 runApplication ..... 189 Extensions ..... 189 48.4