Question

A super class Perimeter has been defined to calculate the perimeter of a parallelogram. Define a subclass Area to compute the area of the parallelogram by using the required data members of the super class. The details are given below:
Classname:Perimeter
Data members / instance variables:
a:to store the length in decimal
b:to store the breadth in decimal
Member functions:
Perimeter(…):parameterized constructor to assign values to data members
double Calculate():calculate and return the perimeter of a parallelogram as 2*(length+breadth)

void show():to display the data members along with the perimeter of the parallelogram

Classname:Area
Data members / instance variables:
h:to store the height in decimal
area:to store the area of the parallelogram
Member functions:
Area(…): parameterized constructor to assign values to data members of both the classes

void doarea():compute the area as (breadth*height)
void show():display the data members of both classes along with the area and perimeter of the parallelogram.

Specify the class Perimeter giving details of the constructor(…) , double Calculate() and void show(). Using the concept of inheritance, specify the class Area giving details of the constructor(…) , void doarea() and void show().
THE MAIN() FUNCTION AND ALGORITHM NEED NOT BE WRITTEN.

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Code

				
					public class Perimeter

{
    double a,b;
    Perimeter(double aa,double bb)
    {
        a=aa;b=bb;
    }
    double Calculate()
    {
        return (2*(a+b));
    }
    void show()
    {
        System.out.println("Length="+a);
        System.out.println("Breadth= "+b);
        System.out.println("Perimeter="+Calculate());
    }
}


public class Area extends Perimeter
{
    double h;
    double area;
    Area(double aa,double bb,double cc)
    {
        super(aa,bb);
        h=cc;
    }
    void doarea()
    {
        area=b*h;
    }
    void show()
    { 
        super.show();
        System.out.println("Height= "+h);
        System.out.println("Area= "+area);
    }
}