Ubic | Polymorphic service manager

I'm reading a lot about hexagonal architecture, but in all the examples that i'm looking, all folders and class ubication are different, and this looks a bit confusing to me.

I've done a simple spring boot application with below folder structure. Adapter folder contains implementation of repository interface and the rest controller.

In domain folder, I've model, which is a simple POJO, ports, that are interfaces of service class which contains all the business logic of Product, and the interface of repository which exposes the methods to be implemented in repository.

In another folder I've service implementation, and as i told before, with the business logic of product.

Is this a correct way to implement an hexagonal architecture for a simple use case? If not, why? Where i should put every class and why? This is what it's not clear...

Much appreciate!

I want to insert data into multiple related tables, I searched, but everything I've found is insert data into multiple tables that aren't related. I have two tables User and OrchardTable, both are related by the user Id, so the primary key of the User table is the Id, which is generated as an identity on the database, and the foreign key of the table OrchardTable is the User Id.

This is from my controller

I needed to set the content-disposition header response for all PDF files in my app. So I thought the best way to do so was using a servlet:

I'm trying to get the location from my cellphone and then send it to an API, so far everything works well untill I try to access each individual value of the data.

So far this is my code.

When trying to create an app that one of its functions is to search for certain places near a given point, I have encountered this error:

SequelizeDatabaseError: st_distance_sphere (geometry, geometry) function does not exist.

I see in the Doc that it works but I can't see the failure.

I want to retrieve data using eloquent model and return it in the following json response.

I am getting the following error: ERROR Error: Uncaught (in promise): TypeError: Cannot read property 'nativeElement' of undefined.

This occurs when I try to add a div with an ngIf and inside a google map:

HTML:

I am stuck in the b,c,d questions of this problem which ask me to set up a matrix of integers (memory alocated) and ask the user what to do: a) Print the matrix. b) Show element ubicated in the position array[i][j]. c) Add all elements of a row selected by the user. d) Add all elements of a column selected by the user. e) Add all elements of the matrix.

I have already tried to implement with a tutorial the row major representation where I used this formula:

address = base Address + (row Index * column Size + column Index)* data Size

So far I figured out how to do the diagonal sum, but I don´t know how to sum the rows and columns with the first address of the array[0][0] that I got with the row major representation.

In the question b). I have not found anything online about how to do it neither.

English is not my mother tongue, If you need something explained better let me know and I will try!

So I have this code that works fine, it launch the .jar file from another machine that I have configure in my pc as a red ubication