// generics/DogsAndRobotMethodReferences.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.

// "Assisted Latent Typing"

import reflection.pets.*;

import java.util.function.*;

class PerformingDogA extends Dog {

public void speak() { System.out.println("Woof!"); }

public void sit() { System.out.println("Sitting"); }

public void reproduce() {}

}

class RobotA {

public void speak() { System.out.println("Click!"); }

public void sit() { System.out.println("Clank!"); }

public void oilChange() {}

}

class CommunicateA {

public static <P> void perform(P performer,

Consumer<P> action1, Consumer<P> action2) {

action1.accept(performer);

action2.accept(performer);

}

}

public class DogsAndRobotMethodReferences {

public static void main(String[] args) {

CommunicateA.perform(new PerformingDogA(),

PerformingDogA::speak, PerformingDogA::sit);

CommunicateA.perform(new RobotA(),

RobotA::speak, RobotA::sit);

CommunicateA.perform(new Mime(),

Mime::walkAgainstTheWind,

Mime::pushInvisibleWalls);

}

}

/* Output:

Woof!

Sitting

Click!

Clank!

*/