public class CircleCalculation2
1: //CircleCalculation2.java
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: import java.util.Scanner;
12:
13: public class CircleCalculation2
14: {
15: public static final double PI = 3.14159;
16:
17: public static void main(String[] args)
18: {
19: double radius; //in inches
20: double area; //in square inches
21: Scanner keyboard = new Scanner(System.in);
22:
23: System.out.println("Enter the radius of a circle in inches:");
24: radius = keyboard.nextDouble();
25: area = PI * radius * radius;
26: System.out.println("A circle of radius " + radius + " inches");
27: System.out.println("has an area of " + area + " square inches.");
28: }
29: }