// functional/CtorReference.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.

class Dog {
 String name;
 int age = -1; // For "unknown"
 Dog() { name = "stray"; }
 Dog(String nm) { name = nm; }
 Dog(String nm, int yrs) { name = nm; age = yrs; }
}

interface MakeNoArgs {
 Dog make();
}

interface Make1Arg {
 Dog make(String nm);
}

interface Make2Args {
 Dog make(String nm, int age);
}

public class CtorReference {
 public static void main(String[] args) {
 MakeNoArgs mna = Dog::new; // [1]
 Make1Arg m1a = Dog::new; // [2]
 Make2Args m2a = Dog::new; // [3]

 Dog dn = mna.make();
 Dog d1 = m1a.make("Comet");
 Dog d2 = m2a.make("Ralph", 4);
 }
}