write a code of area of circle in java code example
Example 1: Java program to calculate area of a circle
import java.util.Scanner;
public class CalculateAreaOfCircle
{
public static void main(String[] args)
{
double radius;
double pi = 3.1415, area;
Scanner sc = new Scanner(System.in);
System.out.println("Please enter radius of circle: ");
radius = sc.nextDouble();
area = pi * radius * radius;
System.out.println("Area of circle: " + area);
sc.close();
}
}
Example 2: area of circle in java
import java.util.Scanner;
public class AreaOfCircle {
public static void main(String args[]){
int radius;
double area;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the radius of the circle ::");
radius = sc.nextInt();
area = (radius*radius)*Math.PI;
System.out.println("Area of the circle is ::"+area);
}
}