// generics/ApplyFunctional.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.*;

import java.util.stream.*;

import java.util.function.*;

import onjava.*;

public class ApplyFunctional {

public static void main(String[] args) {

Stream.of(

Stream.generate(Shape::new).limit(2),

Stream.generate(Square::new).limit(2))

.flatMap(c -> c) // flatten into one stream

.peek(Shape::rotate)

.forEach(s -> s.resize(7));

new FilledList<>(Shape::new, 2)

.forEach(Shape::rotate);

new FilledList<>(Square::new, 2)

.forEach(Shape::rotate);

SimpleQueue<Shape> shapeQ = Suppliers.fill(

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

Shape::new, 2);

Suppliers.fill(shapeQ, SimpleQueue::add,

Square::new, 2);

shapeQ.forEach(Shape::rotate);

}

}

/* Output:

Shape 0 rotate

Shape 0 resize 7

Shape 1 rotate

Shape 1 resize 7

Square 2 rotate

Square 2 resize 7

Square 3 rotate

Square 3 resize 7

Shape 4 rotate

Shape 5 rotate

Square 6 rotate

Square 7 rotate

Shape 8 rotate

Shape 9 rotate

Square 10 rotate

Square 11 rotate

*/