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    RESTful APIs have become a fundamental part of modern web development, allowing applications to communicate and share data seamlessly. In this guide, we will create a simple yet powerful RESTful API using Java, Spring Boot, and Maven.

    Setting Up the Project

    First, ensure you have the following prerequisites:

    1. Java Development Kit (JDK) 8 or later installed on your system.

    2. An Integrated Development Environment (IDE) like Eclipse or IntelliJ IDEA.

    3. Familiarity with Java programming, Spring, and HTTP concepts.

    To kickstart our API development journey, create a new Spring Boot project using Maven:

    1. Open your IDE and create a new Maven project.

    2. Choose “New” -> “Maven Project” and follow the prompts to set up the project.

    3. Ensure you select the Spring Boot archetype during project creation.

    Defining the Model

    A crucial aspect of building APIs is defining the data model. For this tutorial, let’s create a simple model representing a “Product” entity:

    package com.example.api.model;

    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;

    @Entity
    public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String description;
    private double price;

    // Constructors
    public Product() {}

    public Product(String name, String description, double price) {
    this.name = name;
    this.description = description;
    this.price = price;
    }

    // Getters and Setters
    public Long getId() { return id; }
    public void setId(Long id) { this.id = id; }
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
    public String getDescription() { return description; }
    public void setDescription(String description) { this.description = description; }
    public double getPrice() { return price; }
    public void setPrice(double price) { this.price = price; }
    }
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    Building RESTful APIs in Java: A Step-by-Step Tutorial - Medium
    Medium
    How do I build a REST API in Java?

    Before you build a REST API in Java, make sure you have the following installed on your machine: Download from adoptium.net. Confirm with java -version in your terminal. The build tool that manages your dependencies and packaging. Either works well. IntelliJ offers the best Java support out of the box.

    blog.newtum.com
  1. Spring
    https://spring.io › guides › tutorials › rest

    Getting Started | Building REST services with Spring

    Learn how to create a simple payroll service with Spring Boot, Spring Data JPA, and H2 database. Follow the steps to add REST features, HATEOAS, and links to your API.

    • Spring HATEOAS provides some APIs to ease creating REST representations that …

    • Summary Congratulations! You have written a simple application that uses Spring …

  2. Medium
    https://medium.com › javarevisited › building-restful...

    Building RESTful APIs in Java: A Step-by-Step Tutorial - Medium

      1. Setting Up the Project. Let’s create a new Spring Boot project using Maven to kickstart our API …
      2. Defining the Model. A crucial aspect of building APIs is defining the data model. For this tutorial, …
      3. Implementing the Repository. Now, let’s create a repository interface that will handle CRUD …
      4. Building the Service Layer. The service layer acts as a bridge between the controller and the data …
      5. Creating the Controller. The controller handles incoming HTTP requests and directs them to the …
      See full list on medium.com
  3. GeeksForGeeks
    https://www.geeksforgeeks.org › java › how-to-create-a...

    How to Create a REST API using Java Spring Boot?

    Sep 4, 2025 · RESTful web services allow systems to access and manipulate web resources through a uniform and predefined set of stateless operations. Unlike …

  4. Java Guides
    https://www.javaguides.net › rest-api-tutorial.html

    REST API Tutorial - Java Guides

    In this tutorial, you will learn REST basics and important key concepts with examples. Learn all about REST with Java at …

  5. javaspring.net
    https://www.javaspring.net › blog › api-rest-java

    REST API with Java: A Comprehensive Guide - javaspring.net

    Jan 16, 2026 · Java, a widely used and versatile programming language, provides a powerful platform for developing RESTful APIs. This blog will delve into the fundamental concepts of REST APIs in Java, …

  6. Baeldung
    https://www.baeldung.com › building-a-restful-web...

    Build a REST API with Spring and Java Config - Baeldung

    Mar 11, 2026 · In this tutorial, we’ll learn how to set up REST in Spring, including the Controller and HTTP response codes, configuration of payload marshalling, and content negotiation.

  7. Codez Up
    https://codezup.com

    Build a RESTful API in Java from Scratch: 2024 Guide

    Jul 8, 2025 · In this tutorial, we will guide you through building a RESTful API from scratch using Java, focusing on the latest tools and best practices in 2024. …

  8. newtum.com
    https://blog.newtum.com › build-a-rest-api-in-java

    Build a REST API in Java | Beginner Project Guide

    Mar 27, 2026 · Learn how to build a REST API in Java step-by-step. This guide covers JAX-RS, endpoints, HTTP methods, testing your first Java REST API.

  9. Happy Coding
    https://happycoding.io › tutorials › java-server › rest-api

    Creating a REST API - Happy Coding

    You’re the programmer. The REST police aren’t going to come kick your door down if your code “violates” one of these rules. You should treat REST as a tool, not as …

  10. CloudDevs
    https://clouddevs.com › java › restful-apis-with-spring-boot

    Building RESTful APIs with Java and Spring Boot

    Learn how to create robust RESTful APIs using Java and Spring Boot. This comprehensive guide covers the essentials from setup to advanced features, …

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