Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Spring Boot only requires spring-boot-starter-web, which is a Spring Starter, for our application to run.”

A block of code is set as follows:

@Configuration
public class AppConfig
{
   @Bean
   public Student student() {
       return new Student(grades());
    }
   @Bean
   public Grades grades() {
      return new Grades();
    }
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

dependencies {
   implementation 'org.springframework.boot:spring-boot-
   starter-data-jpa'
   runtimeOnly 'com.h2database:h2'
   runtimeOnly 'org.postgresql:postgresql'
}

Any command-line input or output is written as follows:

rpm -ivh jdk-17.interim.update.patch_linux-x64_bin.rpm

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Select Spring Initializr and this will open a form with the same web interface.”

Tips or important notes

Appear like this.