Java Simple Interest Calculator

Overview

This is a simple Java-based console application that calculates both Simple Interest and Compound Interest. It takes user input for the principal amount, interest rate, and time period, then computes and displays the results. The program includes error handling for invalid inputs.

Features

• Calculates Simple Interest using the formula: SI = (P * R * T) / 100
• Calculates Compound Interest using the formula: CI = P * (1 + R/100)^T - P
• Handles invalid inputs (negative values, non-numeric inputs)
• User-friendly CLI-based interaction

Installation

Prerequisites

• Java Development Kit (JDK) 8 or higher
• A Java-compatible IDE (e.g., IntelliJ IDEA, Eclipse) or a terminal with javac and java

Steps

1. Clone this repository:

   git clone https://github.com/nurulashraf/java-simple-interest-calculator.git

2. Navigate to the project folder:

   cd java-simple-interest-calculator

3. Compile the Java program:

   javac -d bin src/simpleinterestcalculator/SimpleInterestCalculator.java

4. Run the program:

   java -cp bin simpleinterestcalculator.SimpleInterestCalculator

Usage

1. Enter the principal amount.
2. Enter the annual interest rate in percentage.
3. Enter the time period in years.
4. The program will display both Simple Interest and Compound Interest.

Example Output

Enter Principal Amount: 1000
Enter Annual Interest Rate (in %): 5
Enter Time Period (in years): 3
Simple Interest: 150.00
Compound Interest: 157.63

Repository Structure

java-simple-interest-calculator/
│── src/
│   └── SimpleInterestCalculator.java
│── README.md
└── LICENSE

License

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