Source of CircleDemo2.java

Structures and functions

public class CircleDemo2

  1: 
  2: import java.util.*;
  3: 
  4: public class CircleDemo2
  5: {
  6:     public static void main(String[] args)
  7:     {
  8:         double radius;
  9:         System.out.println(
 10:           "Enter the radius of a circle in inches:");
 11:         Scanner keyboard = new Scanner(System.in);
 12:         radius = keyboard.nextDouble( );
 13:         System.out.println("A circle of radius "
 14:                                       + radius + " inches");
 15:         System.out.println("has an area of " +
 16:              Circle.area(radius) + " square inches,");
 17:         System.out.println("and a circumference of " +
 18:              Circle.circumference(radius) + " inches.");
 19:     }
 20: }