// polymorphism/shape/RandomShapes.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.

// A "factory" that randomly creates shapes

package polymorphism.shape;

import java.util.*;

public class RandomShapes {

private Random rand = new Random(47);

public Shape get() {

switch(rand.nextInt(3)) {

default:

case 0: return new Circle();

case 1: return new Square();

case 2: return new Triangle();

}

}

public Shape[] array(int sz) {

Shape[] shapes = new Shape[sz];

// Fill up the array with shapes:

for(int i = 0; i < shapes.length; i++)

shapes[i] = get();

return shapes;

}

}