// functional/CtorReference.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.

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);

}

}