Java program to find area of a square and rectangle using abstract class (by noor diana fauzi)

import java.util.*;
class area
{
public static void main (String args[])
{
Scanner in = new Scanner (System.in);
double base,height;
System.out.print ("\n\t Enter base of the Rectangle = ");
base=in.nextDouble();
System.out.print ("\n\t Enter height of the Rectangle = ");
height=in.nextDouble();

double side1,side2;
System.out.print ("\n\t Enter length of side1 of the Square = ");
side1=in.nextDouble();
System.out.print ("\n\t Enter length of side2 of the Square = ");
side2=in.nextDouble();

Rectangle ob1 = new Rectangle (base,height);
Square ob2 = new Square (side1,side2);
ob1.area();
ob2.area();
}
}


abstract class Shape
{
abstract void area();
}

class Rectangle extends Shape
{
double base,height,a;
Rectangle(double b, double l)
{
base=b;
height=l;
}
void area()
{
a=base*height;
System.out.println ("\n\t Area of Rectangle = "+a);
}
}

class Square extends Shape
{
double side1,side2,a;
Square (double s1, double s2)
{
side1=s1;
side2=s2;
}
void area()
{
a=side1*side2;
System.out.println ("\n\t Area of Square = "+a);
}
}