Java. Client-server. Android. multi-user application. What to use?

Question

Java

Hi all. I set myself the task of implementing a project whose details I will describe below.
Briefly, there is a business process in the company in which I work and in which, in fact, I want to apply this solution.
There is a dispatcher, an application, an executor of this application, as well as an actual address. The work between them needs to be automated. I suppose that there will be a dispatcher's workstation (stationary PC), an executor's workstation (android), a server part in java, a database that will store everything related to the operation of these objects. The dispatcher creates a request through the dispatcher's workstation, in some magical way, it enters the performer's workstation. When fulfilling the application, the contractor notes what was done and attaches a photo of the work performed, the data is sent to the server, and therefore to the database. . As a result, we have certain (which we are interested in) data confirming the work performed.
Please evaluate the correctness of the course of my thoughts in terms of the logic of the entire process, correct if necessary. I want to get from you a stack of technologies, which is necessary to build this entire mini-system.

Answer 1

Good afternoon!
If I chose, I would use the following:
- server side - Spring Boot (write a RESTFul service). Since there is nothing specific in the TOR, you can take PostgreSQL as a database, MySQL
Client parts should be written on whatever you can. If you know JS, then:
- client side (android) - React Native
- client side (Desktop) - Electron JS (React) - link
If you know only Java, then:
- client side (android) - Java or Kotlin (native android application )
- client side (Desktop) - JavaFX