CMIS 141, 7981 Introductory Programming Homework 2 – Polygon Java Class. Complete.CMIS 141
Homework 2
1.1 Before attempting this project, be sure you
... [Show More] have completed all of the reading
assignments, hands-on labs, discussions, and assignments to date.
1.2 Design a Java class named Polygon that contains:
A private int data field named numSides that defines the number of sides of the
polygon. The default value should be 4.
A private double data field named sideLength that defines the length of each side. The
default value should be 5.0.
A private double data field named xCoord that defines the x-coordinate of the center of
the polygon. The default value should be 0.0.
A private double data field named yCoord that defines the y-coordinate of the center of
the polygon. The default value should be 0.0.
A private double data field named apothem that defines the apothem of the polygon.
The default value should 5.0.
A private double data filed named perimeter that defines the perimeter of the polygon.
The default value should 20.0.
A no argument constructor that creates a Polygon using the default number of sides,
default side length, default x- and y-coordinates, and the default apothem.
A constructor that creates a Polygon using a specified number of sides, side length, xand y-coordinates and the apothem
Getter and setter methods for all data fields
A getArea() method that returns a double value representing the area of the polygon.
(Note the area of a regular Polgon can be calculated from ½ * Apothem*Perimeter)
A toString() method that displays the number of sides, side length, x-coordinate, ycoordinate and apothem values in String format
1.3 Be sure your code compiles. You should use the command prompt and not a GUI for data
entry and display.
4
1.4 Write a Java test program, named TestPolygon, to create 5 different polygons
representing the 5 test cases you just created. When creating the five polygons, create
one using the no argument constructor. For the remaining four, feel free to use any
number of sides, side length and x-, and y-coordinates and apothem that are not equal
to the default values and not equal to each other. For each of the five polygons, call all of
the methods and display the results. For example for a Polygon with 3 sides, side length
of 2.0 and x-coordinate and y-coordinates of 1.0, and apothem of 1.0 the following test
data may result:
***Output***
toString(): (numsides=3, sideLength=2.0, xcoord=1.0,ycoord=1.0, apothem=1.0)
getNumSides(): 3
getSideLength(): 2.0
getXCoord(): 1.0
getYCoord(): 1.0
getApothem():1.0
getPerimeter(): 6.0 2
getArea(): 3.0
1.5 Document your test cases in the form of table with columns indicating the input values,
expected output, actual output and if the test case passed or failed. This table should
contain 4 columns with appropriate labels and a row for each test case. An example
template is shown below. Note that the actual output should be the actual results you
receive when running your program and applying the input for the test record.
1.6 Keep in mind, for five Polygons, you will have five diff [Show Less]