💳 Payment Gateway Simulation

A backend application built using Java, Spring Boot, and PostgreSQL that simulates a real-time payment gateway system.

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🚀 Features

• ✅ Create a new payment request
• 🔁 Update payment status (INITIATED, SUCCESS, FAILED)
• 🔍 Retrieve payment details by ID
• 📋 View all transactions
• 🌐 RESTful APIs tested with Postman

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🛠 Tech Stack

Layer	Technology
Backend	Java 17, Spring Boot
Database	PostgreSQL
ORM	JPA / Hibernate
API Testing	Postman
Build Tool	Maven

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📦 API Endpoints

Method	Endpoint	Description
POST	/api/payments	Create new payment
GET	/api/payments/{id}	Get payment by ID
PUT	/api/payments/{id}/status?status=SUCCESS	Update payment status
GET	/api/payments	List all payments

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🧪 Sample JSON Payload

➕ Create Payment

{
  "payerName": "Chetan",
  "amount": 500.0
}

🧰 How to Run

1. Clone the repo:

git clone https://github.com/your-username/payment-gateway-simulation.git
cd payment-gateway-simulation

2. Configure application.properties with your PostgreSQL DB.

3. Run the Spring Boot app:

mvn spring-boot:run

4. Open Postman and test endpoints at:

http://localhost:8080/api/payments

🙋‍♂️ Author Chetan Sonawane 🔗 https://www.linkedin.com/in/chetan-sonawane-449a1a242/ 📫 sonawanechetan847@gmail.com