Develop the Data Transfer Object

The three most important tasks for developing the mock user interface are the following:

• The creation of the data transfer object
• The mock service
• The mock user interface

We will progress one-by-one in order.

Data transfer object

The UserDto data transfer object has an identifier and the name of the user. Similarly, the GroupDto object has an identifier and a name. The join object, UserGroupDto, has an instance of UserDto and GroupDto.