SurfaceAreaOfCube.java
1    /* 
2     * Program that features two functions to compute the surface area of a cube. 
3     * - The edge length will be read from the standard input stream. 
4     * - The surface area will be printed to the standard output stream. 
5     * - A face of the cube will be modeled as a simple square. 
6     */
7    package mathematics;
8    import java.util.Scanner;
9    import shapes.SSquare;
10   public class SurfaceAreaOfCube {
11       public static void main(String[] args) {
12           double edgeLength = edgeLength();
13           double surfaceArea = surfaceArea(edgeLength);
14           System.out.println("surface area = " + surfaceArea);
15       }
16       private static double edgeLength() {
17           System.out.print("Please enter the edge length of the cube: ");
18           Scanner scanner = new Scanner(System.in);
19           double edgeLength = scanner.nextDouble();
20           return edgeLength;
21       }
22       private static double surfaceArea(double edgeLength) {
23           SSquare face = new SSquare(edgeLength);
24           int nrOfFaces = 6;
25           double surfaceArea = face.area() * nrOfFaces;
26           return surfaceArea;
27       }
28   }