Writing of the sample application without SOLID principles (Calculator APP) and discuss possible issues which could occur - Coupling and Cohesion. Then Applying SOLID principles to sample application and re-write the sample application. Finally doing Exception handling and logging best practices and Unit testing

The pdf document inside the repository was completed to cover the technologies that can be utilized to enhance and maximize the productivity at both physical and online retail stores.

This REST API based project is responsible for employee management at an Apparel Industrial Firm located in Kurunegala, Sri Lanka. The project is generated with Spring Boot Framework 2.3.5 and Java 1.8 with JPA support. The database was implemented with MySQL.The Project follows SOLID Design Principles, Design Patterns, and Exception Handling wi…