package holding;

/**

* RUN:

* javac typeinfo/pets/*.java

* javac holding/ListIteration.java && java holding.ListIteration

* 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, Cymric, Rat, EgyptianMau, Hamster, EgyptianMau]

*/

import java.util.*;

import typeinfo.pets.*;

public class ListIteration {

public static void main(String[] args)

{

Pets aPets = new Pets();

List<Pet> pets = aPets.arrayList(8);

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

// direct printing

while (it.hasNext()) {

System.out.print(it.next() + ", " + it.nextIndex() + ", " + it.previousIndex() + "; ");

}

System.out.println();

// reverse printing

while (it.hasPrevious()) {

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

}

System.out.println();

// pets

System.out.println(pets);

// replace items

it = pets.listIterator(3);

while (it.hasNext()) {

it.next();

it.set(aPets.randomPet());

}

System.out.println(pets);

}

}