first commit

Calculator.java

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+// Program that implements the arithmetic operation (Calculator) using switch statement.
+
+import java.util.Scanner;
+
+public class Calculator {
+    public static void main(String[] args) {
+
+        char operator;
+        Double number1, number2, result;
+        Scanner input = new Scanner(System.in);
+        System.out.println("Type the operator you want to use: +, -, *, or /");
+        operator = input.next().charAt(0);
+        System.out.println("Enter first number");
+        number1 = input.nextDouble();
+        System.out.println("Enter second number");
+        number2 = input.nextDouble();
+        switch (operator) {
+            case '+':
+            result = number1 + number2;
+            System.out.println(number1 + " + " + number2 + " = " + result);
+            break;
+
+            case '-':
+            result = number1 - number2;
+            System.out.println(number1 + " - " + number2 + " = " + result);
+            break;
+
+            case '*':
+            result = number1 * number2;
+            System.out.println(number1 + " * " + number2 + " = " + result);
+            break;
+
+            case '/':
+            result = number1 / number2;
+            System.out.println(number1 + " / " + number2 + " = " + result);
+            break;
+
+            default:
+            System.out.println("Invalid operator!");
+            break;
+        }
+        input.close();
+    }
+}