💸 Online Expense Tracker

A lightweight full-stack web application built using Java EE technologies to track, manage, and visualize personal expenses.
The project emphasizes modular architecture and practical functionality using DAO, JSP, Servlets, and JDBC.

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📌 Key Features (80/20 Optimized)

• 🧾 Add, View, Delete Transactions — core actions that deliver 80% of value
• 📊 Real-Time Balance Updates
• 👤 User Authentication (Login & Signup)
• 📄 Transaction History Table
• 📐 Simple UI with JSP

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🧱 Tech Stack

Layer	Technology Used
Frontend (View)	JSP + HTML + CSS
Controller	Java Servlets
Business Logic	DAO Pattern (Java)
Data Layer	JDBC + MySQL
Entity Classes	POJOs (Plain Old Java Objects)

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📂 Project Structure

Online_Expense_Tracker/ ├── src/ │ ├── dao/ # Data Access Objects (e.g., UserDao.java, ExpenseDao.java) │ ├── db/ # DB connection (e.g., DBConnect.java) │ ├── entity/ # POJOs (e.g., User.java, Expense.java) │ ├── servlet/ # Java Servlets (e.g., LoginServlet.java, AddExpenseServlet.java) ├── WebContent/ │ ├── css/ # Stylesheets │ ├── js/ # JavaScript files (if any) │ ├── images/ # Images and icons │ ├── pages/ # JSP files (e.g., login.jsp, dashboard.jsp) │ └── WEB-INF/ │ └── web.xml # Deployment descriptor ├── README.md └── .classpath / .project # Eclipse-specific files

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⚙️ How to Run

Prerequisites

• JDK 8+
• Apache Tomcat (or any Java EE servlet container)
• MySQL Server
• MySQL Connector/J (JDBC Driver)

Steps

1. Clone the Repo

   git clone https://github.com/MohammadAliiiii/Online_Expense_Tracker.git
   

2. Import in IDE

Open in Eclipse / IntelliJ as a Dynamic Web Project

3. Configure Database

Create MySQL DB (e.g., expense_tracker)

Import the SQL schema if present

Edit DB credentials in /db/DBConnect.java

4. Deploy

Run on Apache Tomcat

Access via http://localhost:8080/Online_Expense_Tracker