Java Car Purchase & Comparison Platform

I want to build a complete web application—developed with Java Servlets, JSP, Oracle DB, HTML and CSS—that lets people explore new-car models, compare their specifications side-by-side and move smoothly through a purchase flow.

The core modules I need are:
• User registration (with profile creation), secure login and session handling
• A catalogue that pulls car details from Oracle tables and presents them in clean, responsive JSP pages
• A comparison view where two or more cars can be lined up feature-for-feature
• An Admin dashboard; for this first release only the Admin role will log in, so all management tasks (adding/editing car records, tracking dealer logistics, basic user oversight) sit under that profile

Please structure the project to compile under a standard Maven or Gradle setup, include SQL scripts for the schema and seed data, and package the finished application as a deployable WAR. Code clarity and inline comments are important to me so I can extend the system later.