// generics/ApplyTest.java

// (c)2016 MindView LLC: see Copyright.txt

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

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

import java.util.*;

import java.util.function.*;

import onjava.*;

class Shape {

private static long counter = 0;

private final long id = counter++;

@Override

public String toString() {

return getClass().getSimpleName() + " " + id;

}

public void rotate() {

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

}

public void resize(int newSize) {

System.out.println(this + " resize " + newSize);

}

}

class Square extends Shape {}

class FilledList<T> extends ArrayList<T> {

public FilledList(Supplier<T> gen, int size) {

Suppliers.fill(this, gen, size);

}

}

public class ApplyTest {

public static void main(String[] args) throws Exception {

List<Shape> shapes =

Suppliers.create(ArrayList::new, Shape::new, 3);

Apply.apply(shapes, Shape.class.getMethod("rotate"));

Apply.apply(shapes,

Shape.class.getMethod("resize", int.class), 7);

List<Square> squares =

Suppliers.create(ArrayList::new, Square::new, 3);

Apply.apply(squares, Shape.class.getMethod("rotate"));

Apply.apply(squares,

Shape.class.getMethod("resize", int.class), 7);

Apply.apply(new FilledList<>(Shape::new, 3),

Shape.class.getMethod("rotate"));

Apply.apply(new FilledList<>(Square::new, 3),

Shape.class.getMethod("rotate"));

SimpleQueue<Shape> shapeQ = Suppliers.fill(

new SimpleQueue<>(), SimpleQueue::add,

Shape::new, 3);

Suppliers.fill(shapeQ, SimpleQueue::add,

Square::new, 3);

Apply.apply(shapeQ, Shape.class.getMethod("rotate"));

}

}

/* Output:

Shape 0 rotate

Shape 1 rotate

Shape 2 rotate

Shape 0 resize 7

Shape 1 resize 7

Shape 2 resize 7

Square 3 rotate

Square 4 rotate

Square 5 rotate

Square 3 resize 7

Square 4 resize 7

Square 5 resize 7

Shape 6 rotate

Shape 7 rotate

Shape 8 rotate

Square 9 rotate

Square 10 rotate

Square 11 rotate

Shape 12 rotate

Shape 13 rotate

Shape 14 rotate

Square 15 rotate

Square 16 rotate

Square 17 rotate

*/