Write a Java program to calculate area of
Circle, Triangle & Rectangle.(Use Method Overloading)
import java.util.Scanner;
import java.io.*;
public class AreaCalculator {
public
static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("1. Calculate the area of a circle");
System.out.println("2. Calculate the area of a triangle");
System.out.println("3. Calculate the area of a rectangle");
System.out.print("Enter your choice
(1/2/3): ");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.print("Enter the radius of the circle: ");
double radius = scanner.nextDouble();
System.out.println("Area of the circle: " +
calculateArea(radius));
break;
case 2:
System.out.print("Enter the base of the triangle: ");
double base = scanner.nextDouble();
System.out.print("Enter the height of the triangle: ");
double height = scanner.nextDouble();
System.out.println("Area of the triangle: " +
calculateArea(base, height));
break;
case 3:
System.out.print("Enter the length of the rectangle: ");
double length = scanner.nextDouble();
System.out.print("Enter the width of the rectangle: ");
double width = scanner.nextDouble();
System.out.println("Area of the rectangle: " +
calculateArea(length, width));
break;
default:
System.out.println("Invalid choice");
}
}
public
static double calculateArea(double radius) {
return Math.PI * radius * radius;
}
public
static double calculateArea(double base, double height) {
return 0.5 * base * height;
}
public
static double calculateArea(double length, double width) {
return length * width;
}
}
