🏦 BankingSystemSimulation

A multithreaded Java simulation that models fund transfers between two bank accounts using ExecutorService. The system ensures thread safety and prevents race conditions using synchronized methods.

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📂 Project Structure

BankingSystemSimulation/ ├── pom.xml └── src/ └── main/ └── java/ └── com/ └── ritesh/ └── banking/ ├── Account.java ├── UserTransaction.java └── Main.java

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### ⚙️ Technologies Used

* Java 17+ (or any compatible version)
* Maven (build & dependency management)
* IntelliJ IDEA (recommended IDE)
* Java `ExecutorService` for multithreading

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### 🚀 How It Works

* Two accounts: **Ritesh** (rich 💰) and **Amit** (not so much 😅)
* A thread pool executes randomized transfer tasks between them.
* Transfers are thread-safe using `synchronized` methods.
* Balance checks ensure transfers don’t proceed if funds are insufficient.

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### ✅ Features

* 🔄 Concurrent money transfers using multiple threads
* 💸 Synchronized deposit, withdraw, and transfer logic
* 🚫 Prevents overdrawing with balance checks
* 🧠 Demonstrates basic concurrency and thread-safe operations in Java

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### ▶️ Run the Simulation

#### Step 1: Clone or download the repo

```bash
git clone https://github.com/your-username/BankingSystemSimulation.git

Step 2: Open in IntelliJ (or any IDE)

• Make sure the entire project folder is opened (not just /src)
• Let Maven finish indexing

Step 3: Run Main.java

You should see output like:

pool-1-thread-2 withdrew $2000 from Ritesh. New Balance is $9998000
pool-1-thread-2 deposited $2000 to Amit. New Balance is $3000
pool-1-thread-2 transferred $2000 → from Ritesh to Amit

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📌 Sample Output

pool-1-thread-3 not enough balance in Amit. Balance is $1000
pool-1-thread-1 transferred $2000 → from Ritesh to Amit
pool-1-thread-4 transferred $2000 → from Amit to Ritesh

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💡 Possible Enhancements

• Add more accounts (dynamic)
• Log transactions to a file
• Add transaction timestamps or IDs
• Simulate deadlocks and how to prevent them
• Swing/JavaFX UI for live visualization

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👨‍💻 Author

Ritesh Backend Developer

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📜 License

MIT License – feel free to use and modify!

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