This encapsulated design prevents the direct modification of userId and name, ensuring only authorized operations can alter their values.

Micronaut Features in Action

Micronaut, a modern JVM-based framework, provides annotations that take encapsulation and data validation a step further. Let’s break down the features in the example:

• @MappedEntity:

This annotation maps the UserProfile class to a database table. It simplifies the integration with databases, ensuring that the class directly corresponds to an entity in the database.

• @NotNull:

Ensures that the name field is never null, providing a layer of validation that enforces constraints at runtime. If someone tries to create a UserProfile object without providing a name, an error is thrown.

• @Serdeable:

Allows the class to be serialized and deserialized, which is particularly useful for APIs and data transfer.

• @id & @GeneratedValue:

Automatically generates unique IDs for each UserProfile, making database integration seamless.

Opening the Discussion

Encapsulation and annotations like those in Micronaut make development more robust and maintainable. However, there are multiple ways to achieve these goals, and many other libraries or frameworks offer similar or complementary features.

Questions for You:

1. What’s your approach to ensuring encapsulation in your projects?**

2. Have you explored other libraries or frameworks (like Spring Boot, Hibernate, etc.) that offer similar functionality? How do they compare?

3. Are there any other best practices or tools you’d recommend for ensuring encapsulation and validation in a modern JVM-based project?

I’m excited to hear your views and learn about alternative libraries or frameworks that could enhance this design further.
Let’s discuss!!