Hi, this is my university project. Is very simple, but this connects react and express, and java connects to postgresql (this database is changed by react app and express and java) :D
JAVA CLIENT
You need to import libraries from ./lib
The file that begin whole application is Login.java but
If Login form make errors, to begin in /Main/Main.java
Java connects to postgresql database, doesn't connect to express. (You can modify this for your purpose) :)
REACT NATIVE CLIENT
App connects to express backend api (get cars and post solicitudes)
EXPRESS BACKEND
This connects to postgresql and makes API for autos and solicitudes.