This is a Contact Manager project with OneToOne & ManyToOne mapping.
simple crud example.
This project uses these technologies:
1- Spring boot 2- Spring security 3- Spring Data Jpa 4- MySQL 5- Thymeleaf 6- Html/csffsf/bootstrap/js 7- Hibernate validator
note that my focus was on the back-end side and the security part so the front-end is kind of... dull.