Upsolve

This is a competitive programming training manager interface , built using :

Spring boot
MysQL
Bootstrap
Quill js

Class Diagram:

Main actors :

Admin (Manage Users and has all privileges)
Trainer (Manage the training : adding problems , usefull links and blogs ..)
Trainee (Consult pages and comment blogs)

Login page :

Trainer interface :

Trainee interface :

Admin interface :

Home page:

Requests page (Trainers asks to be approved for training) :

Blog page Example: