@NoArgsConstructor annotation in Spring Boot

The @NoArgsConstructor annotation is a feature of Lombok.

It automatically generates a no-argument constructor for your class.

This can be particularly useful when you need a default constructor but don’t want to manually write it out.

Here’s a basic example of how to use @NoArgsConstructor:

import lombok.NoArgsConstructor;

@NoArgsConstructor
public class MyTestClass {
    private String name;
    private int age;
}

In this example, Lombok will generate the following no-argument constructor:

public MyTestClass() {
    // No initialization logic
}

This is useful in various situations, such as:

1. Serialization Libraries: Some libraries, like Jackson for JSON processing, require a no-argument constructor to deserialize objects.
2. Frameworks: Certain frameworks or libraries might need a no-argument constructor for instantiating objects via reflection.

To use Lombok, you’ll need to include it as a dependency in your project and have the Lombok plugin installed in your IDE. For Maven, include it in your pom.xml like so:

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.34</version>
    <scope>provided</scope>
</dependency>

With @NoArgsConstructor, you save time and reduce boilerplate, making your code more maintainable.