Notes

/**
* Write a description of class BoxSheet here.
*
* @author (your name)
* @version (a version number or a date)
*/
import java.io.*;
public class B
{
double l,w,h;
B()
{
l=0.0;
w=0.0;
h=0.0;
}
void costBox()
{
System.out.println(l*w*h);
}


}

/**
* Write a description of class Sheet here.
*
* @author (your name)
* @version (a version number or a date)
*/
import java.io.*;
public class Sheet extends B
{

void cost(int c)throws IOException
{
InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader in=new BufferedReader(isr);
if(c==1)
{
System.out.println("Enter length,width and height");
l=Integer.parseInt(in.readLine());
w=Integer.parseInt(in.readLine());
h=Integer.parseInt(in.readLine());
System.out.println(60*l*w*h);
}
else if(c==2)
{
System.out.println("Enter length,width");
l=Integer.parseInt(in.readLine());
w=Integer.parseInt(in.readLine());

System.out.println(40*l*w);
}
}

public static void main()throws IOException
{
InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader in=new BufferedReader(isr);

int c;

System.out.println("Press 1 for boxnPress 2 for sheet");
c=Integer.parseInt(in.readLine());

Sheet ob=new Sheet();

ob.cost(c);
}
}