What is the purpose of @Data in lombok?

In Lombok, the @Data annotation automatically generates commonly used code, including class constructors, getter and setter methods, equals and hashCode methods, as well as toString method. By using the @Data annotation, developers can simplify their code and reduce their workload.

Specifically, the @Data annotation will automatically generate the following code:

1. getter and setter methods for all non-static fields.
2. A constructor without parameters.
3. A full parameter constructor that includes all non-final fields.
4. The equals and hashCode methods are used for comparing objects and calculating hash values.
5. toString method is used to convert an object into a string representation.

The @Data annotation helps avoid manually writing common code, and automatically updates generated code when there are changes to the class fields. This can improve the readability and maintainability of the code.