(Solved) : Java Programming Question Write Abstract Class Named Baseshape Abstract Method Called Prin Q36963301 . . .

Java programming question)

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Write an abstract class named BaseShape. It should have anabstract method which is called printName which prints out the nameof the shape.

Write an interface named Measurable with the methods

• calculateArea
• calculatePerimeter

Write concrete classes for the following shapes which implementsthe Measurable interface.

• Triangle
• Square
• Rectangle
• Trapezoid
• Circle

Expert Answer

Note: Could you plz go through this code and let meknow if u need any changes in this.Thank You
_________________

// Measurable.java

public interface Measurable {
   public void calculateArea();
   public void calculatePerimeter();
}
__________________________

// BaseShape.java

public abstract class BaseShape {
   private String name;

   public BaseShape(String name) {
       this.name = name;
   }

   public String getName() {
       return name;
   }

   public abstract void printName();
}

_______________________

// Circle.java

public class Circle extends BaseShape implements Measurable{
   private double radius;

   public Circle(String name, double radius) {
       super(name);
       this.radius = radius;
   }

   @Override
   public void calculateArea() {
       double area = Math.PI * radius *radius;
       System.out.printf(“Area :%.2fn”,area);

   }

   @Override
   public void calculatePerimeter() {
       double perim = 2 * Math.PI *radius;
       System.out.printf(“Perimeter:%.2fn”, perim);

   }

   @Override
   public void printName() {
       System.out.println(“Name :” +getName());
   }

}
_______________________

// Rectangle.java

public class Rectangle extends BaseShape implements Measurable{
   private double length;
   private double width;

   public Rectangle(String name, double length, doublewidth) {
       super(name);
       this.length = length;
       this.width = width;
   }

   @Override
   public void calculateArea() {
       double area = length * width;
       System.out.printf(“Area :%.2fn”,area);

   }

   @Override
   public void calculatePerimeter() {
       double perim = 2 * (length +width);
       System.out.printf(“Perimeter:%.2fn”, perim);

   }

   @Override
   public void printName() {
       System.out.println(“Name :” +getName());

   }

}
____________________________

// Square.java

public class Square extends BaseShape implements Measurable{

   private double side;

   public Square(String name, double side) {
       super(name);
       this.side = side;
   }

   @Override
   public void calculateArea() {
       double area = side * side;
       System.out.printf(“Area :%.2fn”,area);

   }

   @Override
   public void calculatePerimeter() {
       double perim = 4 * side;
       System.out.printf(“Perimeter:%.2fn”, perim);

   }

   @Override
   public void printName() {
       System.out.println(“Name:”+getName());

   }

}
__________________________

// Trapezoid.java

public class Trapezoid extends BaseShape implements Measurable{
   private double b1;
   private double b2;
   private double a;
   private double b;
   private double h;

   public Trapezoid(String name, double b1, double b2,double a, double b,
           double h){
       super(name);
       this.b1 = b1;
       this.b2 = b2;
       this.a = a;
       this.b = b;
       this.h = h;
   }

   @Override
   public void calculateArea() {
       double area = ((b1 + b2) / 2.0) *h;
       System.out.printf(“Area :%.2fn”,area);

   }

   @Override
   public void calculatePerimeter() {
       double perim = a + b + b1 +b2;
       System.out.printf(“Perimeter:%.2fn”, perim);

   }

   @Override
   public void printName() {
       System.out.println(“Name :” +getName());

   }

}
____________________________

// Triangle.java

public class Triangle extends BaseShape implements Measurable{
   private double side1;
   private double side2;
   private double side3;

   public Triangle(String name, double side1, doubleside2, double side3) {
       super(name);
       this.side1 = side1;
       this.side2 = side2;
       this.side3 = side3;
   }

   @Override
   public void calculateArea() {
       double s = (side1 + side2 + side3)/ 2.0;
       // calculating area
       double area = Math.sqrt(s * (s -side1) * (s – side2) * (s – side3));
       System.out.printf(“Area :%.2fn”,area);

   }

   @Override
   public void calculatePerimeter() {
       // calculating perimeter
       double peri = side1 + side2 +side3;
       System.out.printf(“Perimeter:%.2fn”, peri);

   }

   @Override
   public void printName() {
       System.out.println(“Shape :” +getName());
   }

}
__________________________

// Driver.java

import java.util.ArrayList;

public class Driver {

   public static void main(String[] args) {
       ArrayList arl =new ArrayList();
       arl.add(new Triangle(“Triangle”, 3,4, 5));
       arl.add(new Square(“Square”,4));
       arl.add(new Rectangle(“Rectangle”,3, 4));
       arl.add(new Trapezoid(“Trapezoid”,3, 11, 8, 10, 7));
       arl.add(new Circle(“Circle”,5.5));

       for (int i = 0; i <arl.size(); i++) {
           if (arl.get(i)instanceof Triangle) {
              arl.get(i).printName();
              ((Triangle) arl.get(i)).calculateArea();
              ((Triangle)arl.get(i)).calculatePerimeter();
             System.out.println(“—————————“);
           } else if(arl.get(i) instanceof Square) {
              arl.get(i).printName();
              ((Square) arl.get(i)).calculateArea();
              ((Square)arl.get(i)).calculatePerimeter();
             System.out.println(“—————————“);
           } else if(arl.get(i) instanceof Rectangle) {
              arl.get(i).printName();
              ((Rectangle) arl.get(i)).calculateArea();
              ((Rectangle)arl.get(i)).calculatePerimeter();
             System.out.println(“—————————“);
           } else if(arl.get(i) instanceof Trapezoid) {
              arl.get(i).printName();
              ((Trapezoid) arl.get(i)).calculateArea();
              ((Trapezoid)arl.get(i)).calculatePerimeter();
             System.out.println(“—————————“);
           } else if(arl.get(i) instanceof Circle) {
              arl.get(i).printName();
              ((Circle) arl.get(i)).calculateArea();
              ((Circle)arl.get(i)).calculatePerimeter();
             System.out.println(“—————————“);
           }

       }

   }

}
____________________________

Output:

Shape :Triangle
Area :6.00
Perimeter :12.00
—————————
Name :Square
Area :16.00
Perimeter :16.00
—————————
Name :Rectangle
Area :12.00
Perimeter :14.00
—————————
Name :Trapezoid
Area :49.00
Perimeter :32.00
—————————
Name :Circle
Area :95.03
Perimeter :34.56
—————————

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