Java Calculator U23EEE1002

CONTRIBUTORS.md

@@ -4,5 +4,6 @@
 <li>William Rupert Waboke (@waboke)
 <li>Nanribet Yohanna Kutwal, (@Nan-yohanna), Mathematics_department, U23MTH1011</li>
 <li>Owaniyi Oluwafemi Micheal, (@Chuckycipher), Cybersecurity_department, U23CYS1072</li>
+<li>Abena Lucas Kuram, (@Kuram06), Electrcal/Electronics, U23EEE1002</li>
 </ol>
 <li>Ahmad Muhammad Idris, (@LuffytheGoat), Physics with Electronics, U23PE1008</li>

Calculator.java

@@ -0,0 +1,85 @@
+import java.util.Scanner;
+
+// Class to perform basic arithmetic operations (Add, Subtract, Multiply, Divide)
+class Calculator {
+
+    // Method for addition
+    public double add(double a, double b) {
+        return a + b;
+    }
+
+    // Method for subtraction
+    public double subtract(double a, double b) {
+        return a - b;
+    }
+
+    // Method for multiplication
+    public double multiply(double a, double b) {
+        return a * b;
+    }
+
+    // Method for division with error handling for division by zero
+    public double divide(double a, double b) {
+        if (b == 0) {
+            System.out.println("Error: Division by zero is not allowed.");
+            return Double.NaN;  // Return Not-a-Number if division by zero occurs
+        }
+        return a / b;
+    }
+}
+
+// Main class to interact with the user and perform arithmetic operations
+public class Main {
+
+    public static void main(String[] args) {
+
+        // Creating an instance of ArithmeticOperations class to perform operations
+        CalculatorApp1 operations = new CalculatorApp1();
+        Scanner scanner = new Scanner(System.in);
+
+        // Display options for the user
+        System.out.println("Welcome to the Simple Calculator!");
+        System.out.println("Choose an operation: ");
+        System.out.println("+ : Add");
+        System.out.println("- : Subtract");
+        System.out.println("* : Multiply");
+        System.out.println("/ : Divide");
+
+        // Getting operation choice from the user
+        System.out.print("Enter operation (+, -, *, /): ");
+        char operation = scanner.next().charAt(0);
+
+        // Getting two numbers from the user
+        System.out.print("Enter first number: ");
+        double num1 = scanner.nextDouble();
+
+        System.out.print("Enter second number: ");
+        double num2 = scanner.nextDouble();
+
+        double result = 0; // Variable to store the result of the operation
+
+        // Perform the operation based on user's choice
+        switch (operation) {
+            case '+':
+                result = operations.add(num1, num2);
+                break;
+            case '-':
+                result = operations.subtract(num1, num2);
+                break;
+            case '*':
+                result = operations.multiply(num1, num2);
+                break;
+            case '/':
+                result = operations.divide(num1, num2);
+                break;
+            default:
+                System.out.println("Invalid operation! Please choose from +, -, *, /.");
+                return;  // Exit the program if the operation is invalid
+        }
+
+        // Display the result
+        System.out.println("Result: " + result);
+
+        scanner.close(); // Closing the scanner resource
+    }
+}