Command-Line Calculator

A simple Java calculator that runs in the terminal.

How to Use

1. Compile the program

javac CommandLineDemo.java

2. Run the calculator

java CommandLineDemo <number1> <operator> <number2>

Examples

java CommandLineDemo 10 + 5
java CommandLineDemo 15 - 3
java CommandLineDemo 7 * 6
java CommandLineDemo 20 / 4

Available Operations

+ : Addition

- : Subtraction

* : Multiplication

/ : Division

Example Output

$ java CommandLineDemo 10 + 5 Result: 15.0

$ java CommandLineDemo 20 / 0 Error: Division by zero!

Requirements

Java (JDK 8 or higher)

Quick Start

Save the Java code as CommandLineDemo.java

Open a terminal in the same folder

Compile the program:

javac CommandLineDemo.java

Run the calculator:

java CommandLineDemo 5 + 3

Use "*" or \* to multiply 

java CommandLineDemo 5 "*" 3

java CommandLineDemo 5 \* 3