Java Records: A Cleaner Way to Model Immutable Data

Java has always supported classes and objects to model data. But how many times have you written boilerplate code just to create a simple data container with fields, getters, constructors, equals(), hashCode(), and toString()?

Java 14 introduced Records (as a preview), and they became a permanent feature in Java 16, giving developers a powerful, concise way to declare immutable data carriers.

What is a Record in Java?

A record is a special class in Java that is a compact syntax for declaring classes that are transparent carriers for immutable data.

public record Person(String name, int age) {}

This one-liner is equivalent to writing a full class like:

public final class Person {
    private final String name;
    private final int age;

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

    public String name() { return name; }
    public int age() { return age; }

    @Override
    public boolean equals(Object o) { ... }
    @Override
    public int hashCode() { ... }
    @Override
    public String toString() { ... }
}

Lombok’s @Builder with Records — Should You?

Technically, yes — you can use Lombok’s @Builder on a record with a few limitations:

@Builder
public record User(String username, String email) {}

Pros:

• Helps when you have many fields
• Clear and flexible object construction

Cons:

• Breaks immutability semantics if misused
• Lombok may generate additional code that is not standard Java behavior

Why Use record if We Already Have @Valuein lombok ?

✅ Use record when:

• You want native Java support (no dependency on Lombok)
• You need simple, immutable DTOs with minimal effort
• You’re working with modern Java (16+)
• You prefer built-in features and IDE compatibility without plugins

✅ Use @Value when:

• You’re already using Lombok in the project
• You need more customization, like adding fields outside the constructor
• You want more flexibility (e.g., multiple constructors, builder pattern, annotations on fields)

Think of it like this:

• **@Value is a powerful Lombok tool** that gives you immutability in a regular class.
• **record is native Java support** for immutable data holders — more restrictive, but cleaner and safer.

Conclusion

If you’re using Java 16 or above, prefer **record** for simple, immutable data classes — it's cleaner, more concise, and dependency-free.

If you need extra flexibility (like multiple constructors, builders, or mutable collections inside), or you’re already using Lombok heavily, then @Value might still be the better option.