/* From: "COMPUTATIONAL PHYSICS, 2nd Ed" 
   by RH Landau, MJ Paez, and CC Bordeianu 
   Copyright Wiley-VCH, 2007.
   Electronic Materials copyright: R Landau, Oregon State Univ, 2007;
   MJ Paez, Univ Antioquia, 2007; and CC Bordeianu, Univ Bucharest, 2007.
   Support by National Science Foundation                              
*/
//  Area.java: Area of a circle, sample program 

public class Area
{ 
	public static void main(String[] args) {       // Begin main method
	
	  double radius, circum, area, PI = 3.141593;        // Declaration
		int modelN = 1;                        // Declare, assign integer
		
		radius = 1.;                                     // Assign radius
		circum = 2.* PI* radius;               // Calculate circumference
		area = radius * radius * PI;                    // Calculate area
		System.out.println("Program number = " + modelN);       // number
		System.out.println("Radius = " + radius);               // radius
		System.out.println("Circumference = " + circum); // circumference
		System.out.println("Area	= " + area);                    // area
	}                                                // end main method
}                                                   // end Area class
/*
To Run:
>javac Area.java
>java Area
OUTPUT:
Program number = 1
Radius = 1.0
Circumference = 6.283186
Area	= 3.141593
*/