Question

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Opts (Regular polygon) An n-sided regular polygon has n sides of the same length and all angles have the same degree (i.e., the polygon is both equilateral and equiangular). Design a class named RegularPolygon that contains: Aprivate int data field named n that defines the number of sides in the polygon with default value 3. A private double data field named side that stores the length of the side with default value 1. A private double data field named x that defines the x-coordinate of the center of the polygon with default value .. A private double data fheld named y that defines the y-coordinate of the center of the polygon with default value 0. Ano-arg constructor that creates a regular polygon with default values. A constructor that creates a regular polygon with the specified number of sides and the length of side, and centered at (0, 0). A constructor that creates a regular polygon with the specifed number of sides, the length of side, and x-and y-coordinates. The accessor and mutator methods for all data fields. The method getPerimter) that returns the perimeter of the polygon. You need to complete the following: 1. Write Regular Polygon.java to include above features. 2. Write a test program that creates three RegularPolygon objects, using the no-arg constructor, using RegularPolygon(6, 4), and using RegularPolygon(10, 4, 5.6,7.8), and then display the perimeters of these 3 polygons.

Answer 1

Below is the complete code as per the requirements. It is well explained inside the code using comments.

RegularPolygon.java

RegularPolygon class public class RegularPolygon private int n; /number of sides /length of side /x coordinate of center of Polygon private double side: private double x; private double y / y coordinate of center of Polygon no-arg constructor public RegularPolygon () n 3: side 1: X 0: V 0: constructor public RegularPolygon (int n, double side) this.n =n; this.side= side: } constructor public RegularPolygon (int n double side, double x, double v) this.n = n; this.side side: this.x = x : this.y y

/ returns number of sides public int getN () return n } / sets number of sides public void setN (int n) this.n = n; // returns lenath of side public double getSide return side /sets length off side public void setSide (double side) this.side= side;: //returns x coordinate of center public double getX () return X; /sets x coordinate of center public void setX (double x) this.x X;

returns y coordinate of center public double getY ( return y sets y coordinate of center public void setY (double y) this.y y /returns the perimeter public double getPerimeter ( return side n;

RegularPolygonDriver.java

/Driver class of Regular Polygon public class RegularPolygonDriver //main method public static void main (String [ args) create object of RegularPolygon with no-arg RegularPolygon ) RegularPolygon polyl. =new /create object of RegularPolygon (6,4) new RegularPolygon (6, 4) RegularPolygon poly2 /create object of Regular Polygon (10, 4, 5.6, 7.8) RegularPolygon (10, 4, 5.6, 7.8); RegularPolygon poly3 = new /display perimeter of above 3 polygons polyl.get Perimeter ()); System.out.println ("Perimeter of Polygon 1: System.out.println ("Perimeter of Polygon 2: System.out.println (" Perimeter of Polygon 3: " poly3.getPerimeter ()); poly2.getPerimeter ()); +

Below is the sample output:

run: Perimeter of Polygon 1: 3.0 Perimeter of Polygon 2: 24.0 Perimeter of Polygon 3 40.0 BUILD SUCCESSFUL (total time: 1 second)

This completes the requirement. Let me know if you have any queries.

Thanks!