AuthenticationDB

a basic Java authentication system backed by MySQL. handles user registration, login, and session tokens.

what it does

• register users with bcrypt-hashed passwords
• login and get a session token (valid 7 days)
• validate a token to see who's logged in
• logout by deleting the token
• auto-cleans up expired sessions

stack

• Java 23, Maven
• MySQL
• jBCrypt for password hashing
• JDBC for database access

setup

1. create the database using schema.sql
2. update credentials in Database.java to match your local MySQL setup
3. build with mvn package and run Main.java

usage

runs as a CLI, just pick from the menu:

0) Exit
1) Register
2) Login
3) Who am I
4) Logout