import java.io.*;
interface Area
{
public void calculateArea();
}
class Rectangle
{
int a=0,b=0,area=0;
public Rectangle(int c,int d)
{
a=c;
b=d;
}
public void calculateArea()
{
area=a*b;
System.out.println("The area of the Rectangle is : "+area);
}
}
class Circle
{
float r=0;
public Circle(float e)
{
r=e;
}
public void calculateArea()
{
double Carea=3.14*r*r;
System.out.println("The area of the Circle is : "+Carea);
}
}
class Square
{
float a=0;
public Square(float e)
{
a=e;
}
public void calculateArea()
{
double Sarea=a*a;
System.out.println("The area of the square is : "+Sarea);
}
}
class sampleMain
{
public static void main(String []args)
{
float l=0;
int m=0,n=0,p=0;
try
{
System.out.println("Enter The radius of a circle.........");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
l=Integer.parseInt(br.readLine());
}
catch(Exception e)
{
System.out.println(e);
}
Circle obj=new Circle(l);
obj.calculateArea();
try
{
System.out.println("Enter The length and breadth of a Rectangle.........");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
m=Integer.parseInt(br.readLine());
n=Integer.parseInt(br.readLine());
}
catch(Exception e)
{
System.out.println(e);
}
Rectangle rec=new Rectangle(m,n);
rec.calculateArea();
try
{
System.out.println("Enter The length of a Square.........");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
p=Integer.parseInt(br.readLine());
}
catch(Exception e)
{
System.out.println(e);
}
Square sr=new Square(p);
sr.calculateArea();
}
}
