Entity, Value Object and Data Transfer Object

  •  Entity: Entity objects are uniquely identified by the ID and not by the attributes.
  • Value Object: Value object is associated with entity. It is used to describe some entity attributes.
  • Data Transfer Object (DTO): In web applications, DTO are used to transfer data between the layers (UI and back end).

Entity
 
 public record TaxableEntity ( int id, String name, int age, char sex, 
                                String location, TaxParamVO taxVO ) {

 }

Value Object


 public record TaxParamVO (double basic, double da, double hra,
                          double cess, double allowance, double deduction,
                           double surcharge) {



 }


DTO


 public record TaxDTO ( int id, String name, int age, char sex, String location, 
                       double basic, double da, double hra, double cess, 
                        double allowance, double deduction, double surcharge ) {



 }









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