What is the best introductory tutorial for learning Java frameworks?

For those new to the Java framework, recommended introductory tutorials include: 1. Spring Boot Tutorial for Beginners; 2. Hibernate Tutorial for Beginners; 3. Struts 2 Tutorial. By using these tutorials, you can build a simple Spring Boot CRUD application that demonstrates the Java framework in action.

Java Framework Tutorial for Beginners: Starting from Scratch

Introduction

Java Frameworks simplify web application development, providing developers with modularity and reusability. If you are new to Java frameworks, this article will provide you with a comprehensive tutorial to help you get started quickly.

Recommended Getting Started Tutorial

Spring Boot Tutorial for Beginners (https://spring.io/guides/gs/spring-boot/ ): Spring Boot is the most popular framework in the Java ecosystem, providing an out-of-the-box experience without configuration. This tutorial is ideal for beginners and includes detailed instructions and practical examples.

Hibernate Tutorial for Beginners (https://www.baeldung.com/hibernate-tutorial): Hibernate is an object-relational mapping (ORM) framework that allows you to manipulate objects in a database Object without needing to know the underlying SQL. In this tutorial, you will learn the basic concepts and usage of Hibernate.

Struts 2 Tutorial (https://struts.apache.org/): Struts 2 is an MVC (Model-View-Controller) framework that simplifies web application development . This tutorial guides you through the steps of creating and deploying a Struts 2 application.

Practical case

Build a simple CRUD application

Let us build a simple CRUD using Spring Boot ( Create, read, update, delete) application to demonstrate the practical application of the Java framework:

@SpringBootApplication
public class CrudApplication {

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

}

Entity Class

@Entity
public class Item {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String name;

    private int quantity;

    // Getters and setters omitted for brevity
}

Warehouse Interface

public interface ItemRepository extends JpaRepository<Item, Long> {
}

Controller

@RestController
@RequestMapping("/api/items")
public class ItemController {

    @Autowired
    private ItemRepository itemRepository;

    // CRUD methods omitted for brevity
}

Running Application

mvn spring-boot:run

Access Endpoint:

• Create item: POST /api/items
• Get item: GET /api/items/{id}
• Update item: PUT /api/items/{id}
• Delete item: DELETE /api/items/{id}

Conclusion

Learning Java framework is very important for developers. By using recommended tutorials for Spring Boot, Hibernate, and Struts, you can get started quickly and build powerful web applications. Always keep learning and practicing and you will become a proficient Java framework developer.

The above is the detailed content of What is the best introductory tutorial for learning Java frameworks?. For more information, please follow other related articles on the PHP Chinese website!