// concurrent/LambdasAndMethodReferences.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.

import java.util.concurrent.*;

class NotRunnable {

public void go() {

System.out.println("NotRunnable");

}

}

class NotCallable {

public Integer get() {

System.out.println("NotCallable");

return 1;

}

}

public class LambdasAndMethodReferences {

public static void main(String[] args)

throws InterruptedException {

ExecutorService exec =

Executors.newCachedThreadPool();

exec.submit(() -> System.out.println("Lambda1"));

exec.submit(new NotRunnable()::go);

exec.submit(() -> {

System.out.println("Lambda2");

return 1;

});

exec.submit(new NotCallable()::get);

exec.shutdown();

}

}

/* Output:

Lambda1

NotCallable

NotRunnable

Lambda2

*/