Spring Boot Tutorial

Introduction In this chapter, we will cover the @DeleteMapping annotation in Spring Boot. The @DeleteMapping annotation is used to handle HTTP DELETE requests, which are typically used for deleting existing resources. We will create endpoints to delete resources using this annotation, focusing on the Employee entity as our primary example. Understanding @DeleteMapping Annotation What is …

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Introduction In this chapter, we will cover the @PutMapping annotation in Spring Boot. The @PutMapping annotation is used to handle HTTP PUT requests, which are typically used to update existing resources. We will create endpoints to update resources using this annotation, focusing on the Employee entity as our primary example. Understanding @PutMapping Annotation What is …

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Introduction In this chapter, we will cover the @PostMapping and @RequestBody annotations in Spring Boot. The @PostMapping annotation is used to handle HTTP POST requests, while the @RequestBody annotation is used to bind the request body to a method parameter. We will create endpoints to create resources using these annotations, focusing on the Employee entity …

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Introduction In this chapter, we will cover everything about the @GetMapping annotation in Spring Boot. @GetMapping Annotation Overview What is @GetMapping? The @GetMapping annotation in Spring Boot is used to create a mapping between HTTP GET requests and handler methods in a controller. It is a specialized version of the @RequestMapping annotation that is specifically …

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Introduction In this chapter, we will explore how to create a Spring Boot REST API that uses the @RequestParam annotation to handle query parameters. Query parameters are a common way to pass data to REST endpoints, especially for filtering, sorting, or paginating results. We will continue from the previous chapters and extend our StudentController to …

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Introduction This chapter will continue from the previous chapter, where we created a Spring Boot REST API that returns a list of Java Beans as JSON. We will now learn how to use the @PathVariable annotation to create a REST API that can accept and handle path variables. @PathVariable Annotation Overview What is @PathVariable? The …

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Introduction Continuing from the previous chapter, where we created a Spring Boot REST API that returns a single Java Bean. In this chapter, we will build a Spring Boot REST API that returns a List of Java Beans (JSON). This is useful for scenarios where you need to return a collection of data objects, such …

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Introduction In this chapter, we will build the Spring Boot REST API that returns a Java Bean in JSON format. This is a common requirement for building web services that return the JSON to the client. Setting Up the Project Using Spring Initializr Open Spring Initializr: Navigate to Spring Initializr in your web browser. Configure …

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Introduction In this chapter, we will explore Spring Boot DevTools, a set of tools designed to enhance the development experience when building Spring Boot applications. DevTools provides features such as automatic restart, live reload, and configurations that help speed up the development process. What is Spring Boot DevTools? Spring Boot DevTools is a module included …

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Introduction In this chapter, we will learn how to run the Spring Boot application from the command line. Running your application from the command line can be useful for testing, deployment, and automation purposes. Prerequisites Before you can run your Spring Boot application from the command line, ensure that you have the following installed and …

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Introduction In this chapter, we will create a simple “Hello World” web application using Spring Boot and Thymeleaf. Thymeleaf is a popular templating engine for Java applications, especially for web applications. It integrates seamlessly with Spring Boot to produce dynamic web pages. Tools and Technologies Used Java 21 Spring Boot 3.2 Thymeleaf IntelliJ IDEA Maven …

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Introduction In this chapter, we will explore the @SpringBootApplication annotation. This annotation simplifies the configuration of Spring Boot applications by combining several annotations into one, making the setup process easier. The class annotated with @SpringBootApplication is the main entry point of a Spring Boot application, and the execution starts from this class. What is @SpringBootApplication? …

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Introduction In this chapter, we will explore Spring Boot Embedded Servers, which are integral to creating stand-alone, production-grade Spring applications. Embedded servers allow you to run your Spring Boot applications without the need for an external server setup, simplifying the deployment and development processes. What are Spring Boot Embedded Servers? Spring Boot Embedded Servers are …

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Introduction In this chapter, we will explore the Spring Boot Parent Starter, a crucial component in managing dependencies and configurations in Spring Boot projects. The Parent Starter simplifies dependency management by providing a common base configuration that ensures consistency across Spring Boot applications. What is the Spring Boot Parent Starter? The Spring Boot Parent Starter …

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Introduction In this chapter, we will explore Spring Boot Starters. Starters are a set of convenient dependency descriptors provided by Spring Boot that you can include in your project to get a predefined set of libraries and configurations. They simplify dependency management and make it easier to get started with Spring Boot. What are Spring …

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Introduction In this chapter, we are going to build our first simple “Hello World” REST API using Spring Boot. We are going to use: Java 21 Spring Boot 3.2 Maven IntelliJ IDEA Browser Creating a New Spring Boot Project Using Spring Initializr Open Spring Initializr: Navigate to Spring Initializr in your web browser. Configure Project …

Build Your First Spring Boot REST API Read More »

Introduction In this chapter, we will explain Spring Boot Auto-Configuration in simple words. Auto-Configuration is one of the most powerful and convenient features of Spring Boot, enabling developers to get started with minimal setup and configuration. What is Spring Boot Auto-Configuration? Spring Boot Auto-Configuration is a mechanism that automatically configures your Spring application based on …

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Introduction In this chapter, we will guide you through the process of creating and setting up your first Spring Boot application using IntelliJ IDEA and Spring Initializr. IntelliJ IDEA is a powerful and popular Integrated Development Environment (IDE) that offers comprehensive support for Spring Boot, making it easier for developers to build and manage their …

Create and Setup Your First Spring Boot App in IntelliJ IDEA (using Spring Initializr) Read More »

Introduction In this chapter, we will explore the various methods to create Spring Boot projects. Each method has its advantages and is suited to different development workflows and preferences. 1. Using Spring Initializr What is Spring Initializr? Spring Initializr is a web-based tool that simplifies the process of bootstrapping a new Spring Boot project. It …

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Introduction In this chapter, we will guide you through the process of setting up your development environment for Spring Boot. Required Tools To get started with Spring Boot, you need to have the following tools installed on your system: Java Development Kit (JDK) Integrated Development Environment (IDE) Build Tool (Maven or Gradle) Spring Boot CLI …

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Introduction Spring provides a comprehensive programming and configuration model for modern Java-based enterprise applications; Spring Boot builds on top of Spring to simplify the development process by reducing the need for boilerplate code and configuration. This chapter will explore the key differences between Spring and Spring Boot, helping you understand when and why to use …

Spring vs Spring Boot Read More »

Introduction Spring Boot is designed to simplify the development of Spring applications by providing various features that reduce the need for boilerplate code and configuration. In this chapter, we will explore the key features of Spring Boot, each explained in detail to understand how they contribute to making Spring application development easier and faster. Key …

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Introduction The Spring Framework is a powerful framework for building enterprise Java applications, but it can be complex and challenging to work with. Common issues include the need for extensive configuration, managing dependencies, deployment complexities, and handling boilerplate code. Spring Boot was created to solve these problems, making it easier for developers to build, run, …

Why Spring Boot Read More »

Introduction In this chapter, we will explore what Spring Boot is, its key features, and why it has become a popular choice for building Java applications. We will delve into how Spring Boot simplifies the development process by handling most of the boilerplate configuration for you, allowing you to focus on writing business logic. Let’s …

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