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Java Programming 5th edition Chapter 10 Inheritance Programs Part 1 Number 3 on page 719 which...

Java Programming 5th edition Chapter 10 Inheritance Programs

Part 1

Number 3 on page 719 which creates a Point class with 2 instance variables; the xCoordinate and yCoordinate. It should have a default constructor and a values constructor. Also include a set method that sets both attributes, a get method for each attribute, and a method that redefines toString() to print the attributes as follows.

point: (x, y)

Part 2

Do number 4 on page 719 which creates a Circle class that extends the Point class above. It adds the radius, circumference, and area instance variables. It should have a default constructor and a values constructor (circumference and area will be 0.0). Include a set method that sets the coordinates and radius attributes, get methods that get each of the 3 new attributes, and a method that redefines toString() to print all attributes. Also, include methods to calculate the circumference and area of the circle. Use pie = 3.141593. Make sure your methods don’t repeat the code already written in the Point class.

Circumference = 2pier

Area = pier2

Part 3

Do number 5 on page 719 which creates a Cylinder class that extends the Circle class above. It adds the height, surfaceArea, and volume instance variables. It should have a default constructor and a values constructor (circumference and circleArea will be calculated from the Circle class, surfaceArea and volume will be 0.0). Include a set method for the center point coordinates, radius, height, circumference, and circleArea attributes (circumference and circleArea will be calculated from the Circle class), get methods that get each of the 3 new attributes, and a method that redefines toString() to print all attributes. Also, include methods to calculate the surfaceArea and volume of the cylinder. Make sure your methods don’t repeat the code already written in the Circle class.

surfaceArea = 2 * circleArea + circleCircumference * cylinderHeight

volume = circleArea * cylinderHeight

Hints:

1.In the values constructor and the set method you’ll need to call the methods to calculate circumference and area so that they have values to use in calculating the surface area and volume.

2.The methods in the Circle class to calculate circumference and area will need to return those values for use in the Cylinder class.

Part 4

Create a client program that uses all 3 of the classes created above. Make it do the following in this order:

1.Instantiate point1 with the default constructor.

2. Instantiate point2 with the values constructor.

3. Use the Point class print method to print point1 and point2.

4. Call the set method to set the x and y coordinates for point1.

5. Use the get methods to get the attributes for point1 and print them in the client (not with the print method).

6. Instantiate circle1 with the default constructor.

7. Instantiate circle2 with the values constructor.

8. Call the methods to calculate the circumference and area for circle2.

9. Use the Circle class print method to print attributes for circle1 and circle2.

10. Use the set method to set the coordinates and radius for circle1.

11. Call the methods to calculate the circumference and area for circle1.

12. Use the get methods to get the attributes for circle1 and print them in the client (not with the print method).

13. Instantiate cylinder1 with the default constructor.

14. Instantiate cylinder2 with the values constructor.

15. Call the methods to calculate the surfaceArea and volume for cylinder2.

16. Use the Cylinder class print method to print the attributes for cylinder1 and cylinder2

17. Call the set method to set the attributes for cylinder1.

18. Call the methods to calculate the surfaceArea and volume for cylinder1.

19.Use the get methods to get the attributes for cylinder1 and print them in the client (not with the print method).

Solutions

Expert Solution

Point.java

public class Point{

   protected double xCoordinate;
   protected double yCoordinate;
  
   protected Point(){   //Default Constructor
       xCoordinate = 0;
           yCoordinate = 0;
   }
   protected Point(double x, double y){   //Parameterized Constructor
       xCoordinate = x;  
       yCoordinate = y;
   }
   public void setCoordinates(double x, double y){
       xCoordinate = x;
       yCoordinate = y;
   }
   public double getXCoordinate(){
       return xCoordinate;
   }
   public double getYCoordinate(){
       return yCoordinate;
   }
  
        public String toString() {   //returns a string representation of this point
           return "point: (" + xCoordinate + ", " + yCoordinate + ")";
       }   
}   

Circle.java

public class Circle extends Point{

    protected double radius;
    protected double area;
    protected double circumference;
    private final double pi = 3.141593;

    //default constructor
    protected Circle() {
        super();   //calling super class constructor
   radius = 0.0;
   area = 0.0;
   circumference = 0.0;
    }
    //parameterized constructor
    protected Circle(double x, double y, double r) {
   super(x,y);    //calling super class constructor
        radius = r;
   area = pi * radius * radius;
   circumference = 2 * pi * radius;
    }
    //set circle attributes
    public void setCircleAttributes(double r) {
        double x = getXCoordinate();   //calling superclass method getXCoordinate() of Point class
   double y = getYCoordinate();   //calling superclass method getYCoordinate() of Point class
   radius = r;
   area = pi * radius * radius;
   circumference = 2 * pi * radius;
    }
    //get radius of circle
    public double getRadius() {
        return radius;
    }
    //get area of circle
    public double getArea() {
        return area;
    }
    //get circumference of circle
    public double getCircumference() {
        return circumference;
    }
    //calculate area of circle
    public double calculateArea() {
   return (pi * radius * radius);
    }
    //calculate circumference of circle       
    public double calculateCircumference() {
   return (2 * pi * radius);
    }
    //Overridden method of Point class
    //returns a string representation of the radius, circumference and area of the circle
    @Override
    public String toString() {  
           return "circle: (" + xCoordinate + "," + yCoordinate + "," + radius + ", " + area + ", " + circumference +")";  

       }
}

Cylinder.java

public class Cylinder extends Circle {
   protected double height;
   protected double surfaceArea;
   protected double volume;

   //default constructor
   protected Cylinder()
   {
      super();   //calling super class constructor
      height = 0.0;
      surfaceArea = 0.0;
      volume = 0.0;
   }
   //parameterized constructor
   protected Cylinder( double x, double y, double r, double h)
   {
      super( x, y, r );   //calling super class constructor
      height = h;
      surfaceArea = 2 * (calculateArea()) + (calculateCircumference()) * h;   //calling superclass methods getArea and getCircumference of Circle class
      volume = calculateArea() * h;   //calling superclass method getArea of Circle class
    }
   //get height of Cylinder
   public double getHeight()
   {
   return height;
   }
   //set cylinder attributes
   public void setCylinderAttributes(double h)
   {     
   double r = getRadius();
   height = h;    
        surfaceArea = 2 * (calculateArea()) + (calculateCircumference()) * h;   //calling superclass methods getArea and getCircumference of Circle class
         volume = (calculateArea()) * h;   //calling superclass method getArea of Circle class
   }
   //get area of Cylinder
   public double getSurfaceArea()
   {
   return surfaceArea;
   }
   //get volume of Cylinder
   public double getVolume()
   {
   return volume;
   }
   //calculate surface area of cylinder
   public double calculateSurfaceArea()
   {
   double r = getRadius();
   return 2 * (calculateArea()) + (calculateCircumference()) * height;   //calling superclass methods getArea and getCircumference of Circle class
    }
   //calculate volume of cylinder
   public double calculateVolume()
   {
   double r = getRadius();
   return ((calculateArea()) * height);   //calling superclass method getArea of Circle class
   }
   //convert the Cylinder to a String
   @Override
   public String toString()
   {  
        return "cylinder: (" + xCoordinate + "," + yCoordinate + "," + radius + "," + height + "," + surfaceArea + ", " + volume +")";  

   }
}

ClientProgram.java

public class ClientProgram{

   public static void main(String args[]){
       Point point1 = new Point();   //creating object of Point class using default constructor
       Point point2 = new Point(2,3);   //creating object of Point class using values constructor
      
       System.out.println(point1.toString());   //calling toString method of Point class
       System.out.println(point2.toString());

       point1.setCoordinates(4.5,5.5);
       System.out.println("point: (" +point1.getXCoordinate()+ ","+point1.getYCoordinate()+")") ;

       Circle circle1 = new Circle();   //creating object of Circle class using default constructor
       Circle circle2 = new Circle(1,1.6,4);   //creating object of Circle class using values constructor

       double area = circle2.calculateArea();   //calling calculateArea method for circle2
       double circumference = circle2.calculateCircumference();   //calling calculateCircumference method for circle2

       System.out.println(circle1.toString());   //calling toString method of Circle class
       System.out.println(circle2.toString());   //calling toString method of Circle class

       circle1.setCircleAttributes(9.5);
       circle1.calculateArea();
       circle1.calculateCircumference();  
      
       System.out.println("circle: (" +circle1.getXCoordinate()+ ","+circle1.getYCoordinate()+","+circle1.getRadius()+","+circle1.getArea()+","+circle1.getCircumference()+")") ;

       Cylinder cylinder1 = new Cylinder();   //creating object of Cylinder class using default constructor
       Cylinder cylinder2 = new Cylinder(7,10,2,8);   //creating object of Cylinder class using values constructor

       double surfaceArea = cylinder2.calculateSurfaceArea();   //calling calculateSurfaceArea method for cylinder2
       double volume = cylinder2.calculateVolume();   //calling calculateVolume method for cylinder2

       System.out.println(cylinder1.toString());   //calling toString method of Cylinder class
       System.out.println(cylinder2.toString());   //calling toString method of Cylinder class

       cylinder1.setCylinderAttributes(5);
       cylinder1.calculateSurfaceArea();
       cylinder1.calculateVolume();  

       System.out.println("cylinder: (" +cylinder1.getXCoordinate()+ ","+cylinder1.getYCoordinate()+","+cylinder1.getRadius()+","+cylinder1.getHeight()+","+cylinder1.getSurfaceArea()+","+cylinder1.getVolume()+")") ;
      
   }

}


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