// polymorphism/shape/RandomShapes.java
// (c)2017 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;
 }
}