Book Image

Full Stack Development with Spring Boot 3 and React - Fourth Edition

By : Juha Hinkula
5 (1)
Book Image

Full Stack Development with Spring Boot 3 and React - Fourth Edition

5 (1)
By: Juha Hinkula

Overview of this book

If you’re an existing Java developer who wants to go full stack or pick up another frontend framework, this book is your concise introduction to React. In this three-part build-along, you’ll create a robust Spring Boot backend, a React frontend, and then deploy them together. This new edition is updated to Spring Boot 3 and includes expanded content on security and testing. For the first time ever, it also covers React development with the in-demand TypeScript. You’ll explore the elements that go into creating a REST API and testing, securing, and deploying your applications. You’ll learn about custom Hooks, third-party components, and MUI. By the end of this book, you'll be able to build a full stack application using the latest tools and modern best practices.
Table of Contents (23 chapters)
1
Part I: Backend Programming with Spring Boot
8
Part II: Frontend Programming with React
14
Part III: Full Stack Development
21
Other Books You May Enjoy
22
Index

Introducing DI

DI is a software development technique where we can create objects that depend on other objects. DI helps with interaction between classes but at the same time keeps the classes independent.There are three types of classes in DI:

  • A service is a class that can be used (this is the dependency).
  • The client is a class that uses dependency.
  • The injector passes the dependency (the service) to the dependent class (the client).

The three types of classes in DI are shown in the following diagram:

Figure 2.1: Dependency Injection classes

DI makes classes loosely coupled. This means that the creation of client dependencies is separated from the client's behavior, which makes unit testing easier.Let's take a look at a simplified example of DI using Java code. In the following code, we don't have DI, because the client Car class is creating an object of the service class:

public class Car {
  private Owner owner;
  
  public Car() {
    owner = new Owner();
}
}
...