📘 What is the SPI Pattern? The Service Provider Interface (SPI) pattern in Java is a mechanism that allows developers to build extensible and pluggable systems. The ServiceLoader scans all JARs in ...
⭐ 2. Project Folder Structure OnlineVotingSystem/ │ ├── src/ │ ├── dao/ │ │ └── UserDAO.java │ ├── model/ │ │ └── User.java │ ├── servlet/ │ │ ├── LoginServlet.java ...