public class CircleCalculation2
1: import java.util.Scanner;
2:
3: /**
4: Program to compute area of a circle.
5: Author: Jane Q. Programmer.
6: E-mail Address: janeq@somemachine.etc.etc.
7: Programming Assignment 2.
8: Last Changed: October 7, 2008.
9: */
10:
11: public class CircleCalculation2
12: {
13: public static final double PI = 3.14159;
14:
15: public static void main(String[] args)
16: {
17: double radius; //in inches
18: double area; //in square inches
19: Scanner keyboard = new Scanner(System.in);
20:
21: System.out.println("Enter the radius of a circle in inches:");
22: radius = keyboard.nextDouble( );
23: area = PI * radius * radius;
24: System.out.println("A circle of radius " + radius + " inches");
25: System.out.println("has an area of " + area + " square inches.");
26: }
27:
28: }
29:
30: