Request DTO for input in Spring Boot - Mini Project: Build & Apply

Create a Request DTO for Input in Spring Boot

📖 Scenario: You are building a simple Spring Boot application that accepts user data through a web form. To handle this data safely and clearly, you need to create a Request DTO (Data Transfer Object) that will hold the input values.

🎯 Goal: Build a Request DTO class in Spring Boot with fields for name (String) and age (int). This class will be used to receive input data from a client.

📋 What You'll Learn

Create a Java class named UserRequest in the dto package.

Add private fields name (String) and age (int).

Generate public getter and setter methods for both fields.

Add a no-argument constructor and an all-argument constructor.

Use standard Java naming conventions.

💡 Why This Matters

🌍 Real World

Request DTOs are used in web applications to safely receive and validate user input data from forms or API calls.

💼 Career

Understanding how to create and use DTOs is essential for backend developers working with Spring Boot or similar frameworks to build clean and maintainable APIs.

1

Create the UserRequest class with package declaration

Create a Java class named UserRequest inside the dto package. Add the package declaration package dto; at the top.

Spring Boot

package dto;

// Your code here

Need a hint?

Start by declaring the package and the class skeleton.

2

Add private fields name and age

Inside the UserRequest class, add two private fields: a String name and an int age.

Spring Boot

package dto;

public class UserRequest {
    // Add private fields name and age here
}

Need a hint?

Use private String name; and private int age; inside the class.

3

Add constructors: no-argument and all-argument

Add a public no-argument constructor and a public constructor with parameters String name and int age that sets the fields.

Spring Boot

package dto;

public class UserRequest {
    private String name;
    private int age;

    // Add constructors here
}

Need a hint?

Write two constructors: one empty and one that sets both fields.

4

Add public getter and setter methods for name and age

Add public getter and setter methods for the name and age fields in the UserRequest class.

Spring Boot

package dto;

public class UserRequest {
    private String name;
    private int age;

    public UserRequest() {
    }

    public UserRequest(String name, int age) {
        this.name = name;
        this.age = age;
    }

    // Add getter and setter methods here
}

Need a hint?

Write getter and setter methods for both fields following Java naming rules.