Write Java Program To Calculate Area Of Circle. In This Post We Share A Java Program Code For Calculate Area Of Circle Which Entered By User And Show Output On Screen After Compile Program.
package com.androidpro.in;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;
public class Main {
public static void main(String[] args)
{
int radius = 3;
System.out.println("The radius
of the circle is " + radius);
/*
* Area of a circle is pi * r * r
where r is a radius of a circle.
*/
// NOTE : use Math.PI constant to
get value of pi
double area = Math.PI * radius *
radius;
System.out.println("Area of a
circle is " + area);
}
}
Output
The radius of the circle is 3
Area of a circle is 28.274333882308138
Process finished with exit code 0
