/* Program for Single Inheritance */
class
Square
{
int l;
Square()
{
System.out.println(“Inside Constructor of
Square”);
l = 100;
}
void area1()
{
int area = l * l;
System.out.println(“Area of Square = ” + area) ;
}
}
// End of Square class
class
Rectangle extends Square
{
int b;
Rectangle()
{
System.out.println(“Inside Constructor of
Rectangle”);
b = 200;
}
void area2()
{
int area = l * b;
System.out.println(“Area of Rectangle
= ” + area) ;
}
}
// End of Rectangle class
class
SingleInheritance
{
public static void main(String args[])
{
Rectangle r = new Rectangle();
r.area1();
r.area2();
} // end main()
} //end class
