What is the purpose of the Lombok library?

Lombok is a Java library that reduces boilerplate code in Java through annotations. Its main goal is to improve development efficiency, reduce redundant code, and allow developers to focus more on implementing business logic.

In particular, the role of Lombok includes:

1. Automatically generate getter and setter methods: Using annotations can automatically generate getter and setter methods for a class, eliminating the tedious task of manually writing these common access methods.
2. Lombok supports the automatic generation of constructors, including no-argument constructors and parameterized constructors, through annotations.
3. Automatically generating the toString, equals, and hashCode methods: An annotation can be used to automatically generate the toString, equals, and hashCode methods for a class, eliminating the need to manually write these common methods’ repetitive code.
4. Automatic logging: Lombok supports automatically generating code related to logging through annotations, including declaring logging fields and inserting logging code.
5. Automatically generate Builder pattern: By using annotations, the relevant code for the Builder pattern can be automatically generated, simplifying the process of creating complex objects.

In general, the role of Lombok is to simplify the development process, reduce writing boilerplate code, increase code readability, and maintainability. It allows developers to focus more on implementing business logic and reduce repetitive work.