OnJava8-Examples/collections/ListIteration.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

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// collections/ListIteration.java

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

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

import reflection.pets.*;

import java.util.*;

public class ListIteration {

public static void main(String[] args) {

List<Pet> pets = new PetCreator().list(8);

ListIterator<Pet> it = pets.listIterator();

while(it.hasNext())

System.out.print(it.next() +

", " + it.nextIndex() +

", " + it.previousIndex() + "; ");

System.out.println();

// Backwards:

while(it.hasPrevious())

System.out.print(it.previous().id() + " ");

System.out.println();

System.out.println(pets);

it = pets.listIterator(3);

while(it.hasNext()) {

it.next();

it.set(new PetCreator().get());

}

System.out.println(pets);

}

/* Output:

Rat, 1, 0; Manx, 2, 1; Cymric, 3, 2; Mutt, 4, 3; Pug,

5, 4; Cymric, 6, 5; Pug, 7, 6; Manx, 8, 7;

7 6 5 4 3 2 1 0

[Rat, Manx, Cymric, Mutt, Pug, Cymric, Pug, Manx]

[Rat, Manx, Cymric, Rat, Rat, Rat, Rat, Rat]