L02

SodaCan.java 
 /**
 * Constructor and methods for a soda can object
 * 
 * @author Brandon
 * @version 1/1/1990
 */
public class SodaCan {
 private double r; // soda can radius
 private double h; // soda can height

 public SodaCan(double radius, double height) {
 r = radius;
 h = height;
 }

 public double findSurfaceArea() {
 return 2.0 * (22.0 / 7.0) * r * h + 2.0 * (22.0 / 7.0) * r * r; // compute the surface area A=2πrh+2πr^2
 }

 public double findVolume() {
 return (22.0 / 7.0) * r * r * h; // compute the volume V=πr^2h
 }
}
 
 SodaCanTest.java 
 import java.util.Scanner;

/**
 * A class to test a SodaCan
 * 
 * @author Brandon
 * @version 1/1/1990
 */
public class SodaCanTest {
 public static void main(String[] args) {
 Scanner myScanner = new Scanner(System.in);

 System.out.print("Enter the radius: ");
 String answer = myScanner.nextLine();
 double radius = Double.parseDouble(answer); // convert using the parseDouble method

 System.out.print("Enter the height: ");
 answer = myScanner.nextLine();
 double height = Double.parseDouble(answer); // convert using the parseDouble method

 // instantiate a soda can object using the radius and height above
 // display the surface area to three decimal digits using printf
 // display the volume to three decimal digits using printf
 SodaCan mySodaCan = new SodaCan(radius, height);

 System.out.printf("The surface area of the can is %.3f", mySodaCan.findSurfaceArea());
 System.out.println(); // this is to add a new line between the strings
 System.out.printf("The volume of the can is %.3f", mySodaCan.findVolume());
 }
}