Program to calculate the room area and volume to illustrate the concept of single inheritance.

CODE:

class Roomarea 

{

protected double l, b;

Roomarea(double len, double br)

{

l=len;

b=br;

}

void putdata()

{

System.out.println("Area of Room: "+(l*b));

}

}

class Roomvol extends Roomarea 

{

double h;

Roomvol(double len, double br, double he)

{

super(len, br);

h=he; 

}

void putdata()

{

super.putdata();

System.out.println("Volume of Room: "+(l*b*h));

}

}

public class EXP18Q4

{

public static void main(String[] args)

{

Roomvol r1 = new Roomvol(10, 20, 10);

r1.putdata(); 

} }