Chapter 1, Introduction

1. Spring Boot is a standalone, production-grade, flexible, and extensible application development framework for building enterprise-grade Spring applications with minimum code and configurations.
2. A class annotated with the @SpringBootApplication annotation and a Java main method that calls the SpringApplication.run method with the class annotated with @SpringBootApplication and the main method arguments:

@SpringBootApplication
public class SpringBootIntroApplication {

   public static void main(String[] args) {
      SpringApplication.run(SpringBootIntroApplication.class, 
      args);
   }
}

3. Spring Boot 2.0 requires at least Java 8 to develop and run applications.
4. HTTP/2 is an improved version of HTTP that has introduced support for multiplexing, push, and header compression from the ground up to enable efficient communication between client and server.
5. The...