Figures'_Area_With_Switch_Case

import java.util.Scanner;

public class Switch_Case {
    public static void main(String[] args) {
 Scanner keyboard = new Scanner(System.in);
        System.out.print("Enter figure to calculate the area: ");
        String figure = keyboard.next();
        switch (figure) {
            case ("square"):
                System.out.println("Enter side = a");
                double a = keyboard.nextDouble();
                System.out.printf("The area of square with side " + a + " is %.3f ", a * a);
                break;
            case "rectangle":
                System.out.println("Enter side = a;");
                a = keyboard.nextDouble();
                System.out.println("Enter side = b;");
                double b = keyboard.nextDouble();
                System.out.printf("The are of rectangle with sides " + a + " and " + b + " is %.3f", a * b);
                break;
            case "triangle":
                System.out.println("Enter side = a");
                a = keyboard.nextDouble();
                System.out.println("Enter height = h");
                double h = keyboard.nextDouble();
                double result = (a * h )/2;
                System.out.printf("The area of triangle with side " + a + " and height " + h + " is %.3f", result);
                break;
            case "circle":
                System.out.println("Enter radius = r");
                double r = keyboard.nextDouble();
                result = ((r * r) * Math.PI);
                System.out.printf("The area of circle with radius " + r + " is %.3f", result);
                break;
            default:
                System.out.println("Not a valid figure");

        }


    }
}