Calculator in java

Author: Dinushawh

java/Calculator_JAVA.java

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+// Import the Scanner class
+import java.util.Scanner;
+
+// creating class
+public class Calculator_JAVA {
+
+    public static void main(String[] args) {
+	
+	// Create a Scanner object
+        Scanner reader = new Scanner(System.in);
+
+	//Print imformation
+        System.out.print("Enter two numbers: ");
+
+	// take input from the user
+        double first = reader.nextDouble();
+        double second = reader.nextDouble();
+	
+	// Print information
+        System.out.print("Enter an operator (+, -, *, /): ");
+
+	// take input from the user
+        char operator = reader.next().charAt(0);
+	
+	// initialize variables
+        double result;
+	
+        switch(operator)
+        {
+	    // statements
+            case '+':
+                result = first + second;
+                break;
+
+	    // statements
+            case '-':
+                result = first - second;
+                break;
+
+	    // statements
+            case '*':
+                result = first * second;
+                break;
+
+	    // statements
+            case '/':
+                result = first / second;
+                break;
+
+	    // default statements
+            default:
+                System.out.printf("Error! operator is not correct");
+                return;
+        }
+
+	// Output of the calculated data
+        System.out.printf("%.1f %c %.1f = %.1f", first, operator, second, result);
+    }
+}