🍔 Online Food Ordering System

📌 Description

Multithreaded Java console-based food ordering system with cart, billing, GST, discount, file handling, search, sorting, and online payment simulation.

🚀 Features

• 📋 View food menu
• 🔍 Search food item
• 💰 Sort by price
• 🛒 Add to cart
• 🧾 GST & discount calculation
• 💳 Online payment simulation (UPI/Card/COD)
• 🧵 Multithreaded live order tracking
• 📂 Order history stored in file

🛠️ Technologies Used

• Java
• OOP
• Multithreading
• File Handling
• Collections Framework

▶️ How to Run

1. Compile all files:

   javac *.java

2. Run the program:

   java Main

📁 Output

• Order history → orders.txt
• Live order status simulation in console