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🛡️ Secure Banking Validator

A polished Java Swing desktop app demonstrating the Chain of Responsibility pattern for real-time transaction validation.
Detect format errors, enforce limits, and guard against fraud—all before any money moves!

“Validate every transfer. Secure every transaction.”

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✨ Key Features

• 🔗 Chain of Responsibility
  Sequential FormatValidator → LimitValidator → FraudValidator handlers ensure each check runs in order.

• 📋 Comprehensive Validation

  • FormatValidator: Required fields & numeric parsing
  • LimitValidator: Daily transfer cap enforcement
  • FraudValidator: Large-transaction fraud alert

• 🎨 Intuitive GUI
  Nimbus L&F, styled text fields, color-themed buttons & result pane.

• ⚡ Instant Feedback
  Real-time result messages: ❌ rejection reasons or ✅ approval details.

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🚀 Quick Start

Prerequisites

• Java JDK 11+
• Maven (or your IDE’s build tool)
• Git

Installation

git clone https://github.com/Tharindu714/Security-Validator-Banking-DialogBox.git
cd Security-Validator-Banking-DialogBox
mvn clean package

Run

java -jar target/Security-Validator-Banking-DialogBox.jar

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📂 Project Structure

src/
└── main/
    ├── java/
    │   └── com/tharindu/smartBanking/
    │       ├── Transaction.java
    │       ├── Handler.java
    │       ├── AbstractHandler.java
    │       ├── FormatValidator.java
    │       ├── LimitValidator.java
    │       ├── FraudValidator.java
    │       └── MobileBankingApp.java
    └── resources/
        └── (any GUI images or icons)

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🧩 UML Diagrams

Add your .png/.svg diagrams under docs/uml/.

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🎉 Screenshot Showcase

Step 1: Input Account & Amount	Step 2: Chain Validators Trigger	Step 3: Instant Approval/Rejection

Place high-res screenshots in docs/images/.

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📜 License

This project is licensed under the MIT License. See LICENSE for details.

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Secure your banking app with robust validation.
Get Started →