Data Meter 📊

Data Meter is a Java Maven project that processes mobile data usage logs, calculates total usage and cost per user, and applies configurable surcharges and thresholds.

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🧾 Features

• Aggregates 4G/5G and roaming usage by mobile number
• Applies custom rates and surcharges
• Handles malformed input gracefully
• Includes unit tests with JUnit
• Configuration-driven using config.properties

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How to Run the Project

Clone the Repository

• git clone https://github.com/your-username/data-meter.git

Move to respective Directory

• cd data-meter

Build the project

• mvn clean install

Run the project

• mvn exec:java

Inputs

• Input to the project is one or more .txt files representing monthly usage data.

• Files are passed as comma-separated values.

• After processing, the app generates: An aggregated .csv report based on mobile number usage.

• An interactive prompt where you can enter a mobile number to see specific user data.

Run Tests - To run unit tests

• mvn test