// reflection/Shapes.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

import java.util.stream.*;

abstract class Shape {

void draw() {

System.out.println(this + ".draw()");

}

@Override public abstract String toString();

}

class Circle extends Shape {

@Override public String toString() {

return "Circle";

}

}

class Square extends Shape {

@Override public String toString() {

return "Square";

}

}

class Triangle extends Shape {

@Override public String toString() {

return "Triangle";

}

}

public class Shapes {

public static void main(String[] args) {

Stream.of(

new Circle(), new Square(), new Triangle())

.forEach(Shape::draw);

}

}

/* Output:

Circle.draw()

Square.draw()

Triangle.draw()

*/