OnJava8-Examples/housekeeping/PassingThis.java at master · xinan-w/OnJava8-Examples · GitHub

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// housekeeping/PassingThis.java

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

class Person {

public void eat(Apple apple) {

Apple peeled = apple.getPeeled();

System.out.println("Yummy");

}

class Peeler {

static Apple peel(Apple apple) {

// ... remove peel

return apple; // Peeled

}

class Apple {

Apple getPeeled() { return Peeler.peel(this); }

}

public class PassingThis {

public static void main(String[] args) {

new Person().eat(new Apple());

}

/* Output:

Yummy