GitHub - stelaras36/JavaUserLoginGUI: Java Swing GUI login & registration system with password hashing, email validation and dark mode toggle.

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Java Swing GUI login & registration system with password hashing, email validation and dark mode toggle.

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Name		Name	Last commit message	Last commit date
Latest commit History 5 Commits
.settings		.settings
bin/loginapp		bin/loginapp
src/loginapp		src/loginapp
.classpath		.classpath
.gitignore		.gitignore
.project		.project
LICENSE		LICENSE
README		README
users.txt		users.txt
Στιγμιότυπο οθόνης 2025-05-15 153041.png		Στιγμιότυπο οθόνης 2025-05-15 153041.png

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# JavaUserLoginGUI

A complete **Java Swing GUI Login & Registration system**, built for desktop environments.  
Includes features such as:

- 🔒 Password hashing (SHA-256)
- ✉️ Email validation (only Gmail, YahooMail, Outlook, Hotmail)
- 🧠 Username duplication check
- 🎨 Dark Mode toggle
- ✅ Successful login redirects to Welcome screen
- 🔓 Logout functionality

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## 🛠️ Technologies Used

- Java 8+
- Swing / AWT
- SHA-256 (MessageDigest)
- File I/O

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## 📂 Structure


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## ▶️ How to Run

1. Clone the repository:
```bash
git clone https://github.com/stelaras36/JavaUserLoginGUI.git