Lombok is a Java library that helps reduce boilerplate code in Java classes. It provides a set of annotations that can be used to generate code at compile-time. Lombok can be used to generate getters, setters, constructors, equals and hashCode methods, toString methods, and more. By using Lombok annotations, developers can write less code, which can make code more concise, easier to read, and easier to maintain.
For example, instead of writing getters and setters for every field in a class, Lombok provides an @Getter and @Setter annotation that generates these methods automatically. Similarly, the @ToString annotation generates a toString() method that includes the values of all the fields in the class. Lombok also provides annotations for generating constructors, builders, and more.
Lombok is widely used in Java development, and many popular Java frameworks and libraries, such as Spring and Hibernate, support it. Lombok is available as a Maven or Gradle dependency, and it can be easily integrated into any Java project.