class Shapes {

public static void main(String args[]) {

Triangle t1 = new Triangle("isosceles",4.0,4.0);

Triangle t2 = new Triangle("right",8.0,12.0);

System.out.println("Info for t1: ");

t1.showStyle();

System.out.println(t1); // using toString() method

System.out.println("Area is " + t1.area());

System.out.println();

System.out.println("Info for t2: ");

t2.showStyle();

System.out.println("Area is " + t2.area());

System.out.println();

Rectangle r1 = new Rectangle(2.0,2.0);

if (r1.isSquare()) System.out.print("Square");

else System.out.print( "Rectangle");

System.out.print(" having area "+r1.area());

}

}