Is Lombok Worth It? Uncovering the Hidden Costs of Java’s Magic Annotations

Love Begins, Hate Origin

Installing the Lombok plugin in IntelliJ IDEA is painless; the moment you add the plugin, you fall in love with its ability to generate getters, setters, equals, hashCode, and toString methods automatically.

Code before Lombok

public class MyObject {
    private Long id;
    private String name;
    private int age;
    private int gender;

    public Long getId() { return id; }
    public void setId(Long id) { this.id = id; }
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
    public int getAge() { return age; }
    public void setAge(int age) { this.age = age; }
    public int getGender() { return gender; }
    public void setGender(int gender) { this.gender = gender; }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        MyObject obj = (MyObject) o;
        return age == obj.age &&
               gender == obj.gender &&
               Objects.equals(id, obj.id) &&
               Objects.equals(name, obj.name);
    }

    @Override
    public int hashCode() { return Objects.hash(id, name, age, gender); }

    @Override
    public String toString() {
        return "MyObject{" +
               "id=" + id +
               ", name=" + name +
               ", age=" + age +
               ", gender=" + gender +
               '}';
    }
}

All JavaBeans are cluttered with such boilerplate, making the source code bulky.

Code after adding @Getter and @Setter

@Getter
@Setter
public class MyObject {
    private Long id;
    private String name;
    private int age;
    private int gender;

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        MyObject obj = (MyObject) o;
        return age == obj.age &&
               gender == obj.gender &&
               Objects.equals(id, obj.id) &&
               Objects.equals(name, obj.name);
    }

    @Override
    public int hashCode() { return Objects.hash(id, name, age, gender); }

    @Override
    public String toString() {
        return "MyObject{" +
               "id=" + id +
               ", name=" + name +
               ", age=" + age +
               ", gender=" + gender +
               '}';
    }
}

Now the class looks much slimmer.

Replacing equals and hashCode with @EqualsAndHashCode

@Getter
@Setter
@EqualsAndHashCode
public class MyObject {
    private Long id;
    private String name;
    private int age;
    private int gender;

    @Override
    public String toString() {
        return "MyObject{" +
               "id=" + id +
               ", name=" + name +
               ", age=" + age +
               ", gender=" + gender +
               '}';
    }
}

We can also drop the explicit toString method by adding @ToString.

Using the combined @Data annotation

@Data
public class MyObject {
    private Long id;
    private String name;
    private int age;
    private int gender;
}

With @Data, Lombok generates getters, setters, equals, hashCode, and toString automatically, giving the class a “perfect” appearance.

Distorted Aesthetics, Hidden Risks

Although Lombok reduces boilerplate, it introduces several serious drawbacks:

JDK version issues : Upgrading from Java 8 to Java 11 can break Lombok, forcing developers to remove annotations and regenerate code manually.

Forced adoption : Anyone using code that depends on Lombok must also install the Lombok plugin and understand its annotations, creating an unwanted dependency.

Poor readability : Lombok hides the actual methods; constructors generated by @AllArgsConstructor can expose all fields, making the class unsafe and hard to debug.

Increased coupling : Modules that use Lombok require the Lombok JAR and IDE plugin, propagating the dependency throughout the codebase.

Not worth the trade‑off : While Lombok shortens code, it adds technical debt, reduces code clarity, and can hinder future maintenance; alternatives like Kotlin or Scala may be preferable.

Summary

Lombok is a clever Java library that dramatically reduces boilerplate, but it is not a standard part of the Java ecosystem. Using Lombok can increase technical debt, lower readability, and tighten coupling between modules. Teams should weigh these risks carefully before adopting Lombok in large or long‑term projects.