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/* Calculate Circle Perimeter using Java Example This Calculate Circle Perimeter using Java Example shows how to calculate Perimeter of circle using it's radius. */ 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); } } /* Output of Calculate Circle Perimeter using Java Example would be Please enter radius of a circle 19 Perimeter of a circle is 119.38052083641213 */ |
While trying to copy your program, it also selects the line numbers.
Can you add a copy to clipboard button? Or at least make the line numbers unselectable.