1    /* 
2     * A program that computes the area of a desk not obscured by any object. 
3     * 1. Introduce a variable for each of the given variables and bind these variables to the measurements 
4     * 2. Create 6 "objects to think with" from the NPW: one for the desk, one for the book, one for the lab 
5     *      manual, one for a plate, one for a can, and one for a coaster. Introduce variables for each and 
6     *      appropriately bind the variables to the objects (Constraint: Do not use an explicit constructor 
7     *      to construct the coaster - ask the can to produce the coaster). 
8     * 3. Introduce a variable and bind it to the collective area of the objects on the desk 
9     * 4. Introduce a variable and bind it to the result - the area of the desk not obscured by the objects 
10    *      which sit on top of it. 
11    * 5. Display the result to the standard output stream, being sure to give it a label. 
12    */
13   package shapes;
14   
15   public class MessyDesk {
16       public static void main(String[] args) {
17           //desk measurements
18           double deskHeight = 66.0;
19           double deskWidth = 153.0;
20   
21           //notebook measurements (there's 2)
22           double notebookHeight = 29.7;
23           double notebookWidth = 21.0;
24   
25           //lab manual measurements
26           double labManualHeight = 30.48;
27           double labManualWidth = 25.4;
28   
29           //can measurements (there's 3 sitting on top of coasters (circumscribing square of can = coaster))
30           double canRadius = 2.52;
31   
32           //dinner plate measurements (there's 9)
33           double plateDiameter = 20.6;
34           double plateRadius = (plateDiameter/2);
35   
36           //Create objects to think with
37           SRectangle desk = new SRectangle(deskHeight, deskWidth);
38           SRectangle notebook = new SRectangle(notebookHeight, notebookWidth);
39           SRectangle labManual = new SRectangle(labManualHeight, labManualWidth);
40           SCircle plate = new SCircle(plateRadius);
41           SCircle can = new SCircle(canRadius);
42           SSquare coaster = can.circumscribingSquare();
43   
44           //Get area of all objects not including the desk
45           double deskObjectsArea = ((2 * notebook.area()) + (9 * plate.area()) + (3 * coaster.area()) + labManual.area());
46   
47           //Get desk area
48           double deskArea = desk.area();
49   
50           //Get area of a desk not obscured by any object
51           double notObscuredDeskArea = (deskArea - deskObjectsArea);
52   
53           //Display result to output stream
54           System.out.println("The area of a desk not obscured by any object: " + notObscuredDeskArea);
55       }
56   }
57