Java Program Example to calculate Perimeter Of Circle

Calculate Circle Perimeter using Java Example

This Calculate Circle Perimeter using Java Example shows how to calculate Perimeter of circle using it's radius.

Output of Calculate Circle Perimeter using Java Example would be
Please enter radius of a circle
19
Perimeter of a circle is 119.38052083641213

 import java.io.BufferedReader;  
 import java.io.IOException;  
 import java.io.InputStreamReader;  
 public class CalculateCirclePerimeterExample {  
     public static void main(String[] args) {  
         int radius = 0;  
         System.out.println("Please enter radius of a circle");  
         try  
         {  
             //get the radius from console  
             BufferedReader br = new BufferedReader(new InputStreamReader(System.in));  
             radius = Integer.parseInt(br.readLine());  
         }  
         //if invalid value was entered  
         catch(NumberFormatException ne)  
         {  
             System.out.println("Invalid radius value" + ne);  
             System.exit(0);  
         }  
         catch(IOException ioe)  
         {  
             System.out.println("IO Error :" + ioe);  
             System.exit(0);  
         }  
         /*  
          * Perimeter of a circle is  
          * 2 * pi * r  
          * where r is a radius of a circle.  
          */  
         //NOTE : use Math.PI constant to get value of pi  
         double perimeter = 2 * Math.PI * radius;  
         System.out.println("Perimeter of a circle is " + perimeter);  
     }  
 }  

Java Programming Exercise :

Tags:

• Previous Java Programming
• Next On Java Programming