Hackforge Academy

Explanation

DTO (Data Transfer Object) transfers only the required data between client and server.

Code:

public class StudentDTO{
    private String name;
    private String email;
}

Explanation

Entities represent database tables while DTOs represent API data.

Code:

Student student=new Student();
StudentDTO dto=new StudentDTO();

Explanation

Convert Entity to DTO before returning data.

Code:

StudentDTO dto=new StudentDTO();
dto.setName(student.getName());

Explanation

Accept DTO objects in request bodies instead of entities.

Code:

@PostMapping
public StudentDTO create(@RequestBody StudentDTO dto){
    return dto;
}

Explanation

DTOs improve security by hiding sensitive fields such as passwords.

Code:

public class UserDTO{
    private String username;
}