package holding;

/**

* RUN:

* javac typeinfo/pets/*.java

* javac holding/InterfaceVsIterator.java && java holding.InterfaceVsIterator

* OUTPUT:

* 0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx

* 2:Cymric 1:Manx 0:Rat 6:Pug 5:Cymric 4:Pug 3:Mutt 7:Manx

* 0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx

* 2:Cymric 1:Manx 0:Rat 6:Pug 5:Cymric 4:Pug 3:Mutt 7:Manx

* {Ralph=Rat, Eric=Manx, Robin=Cymric, Lacey=Mutt, Britney=Pug, Sam=Cymric, Spot=Pug, Fluffy=Manx}

* [Ralph, Eric, Robin, Lacey, Britney, Sam, Spot, Fluffy]

* 0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx

* 0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx

*/

import java.util.*;

import typeinfo.pets.*;

public class InterfaceVsIterator {

public static void display(Iterator<Pet> it) {

while (it.hasNext()) {

Pet p = it.next();

System.out.print(p.id() + ":" + p + " ");

}

System.out.println();

}

public static void display(Collection<Pet> pets) {

for (Pet p : pets) {

System.out.print(p.id() + ":" + p + " ");

}

System.out.println();

}

public static void main(String[] args) {

List<Pet> petList = new Pets().arrayList(8);

Set<Pet> petSet = new HashSet<Pet>(petList);

Map<String, Pet> petMap = new LinkedHashMap<String, Pet>();

String[] names = ("Ralph, Eric, Robin, Lacey, " + "Britney, Sam, Spot, Fluffy").split(",");

for (int i = 0; i < names.length; i++) {

petMap.put(names[i], petList.get(i));

}

display(petList);

display(petSet);

display(petList.iterator());

display(petSet.iterator());

System.out.println(petMap);

System.out.println(petMap.keySet());

display(petMap.values());

display(petMap.values().iterator());

}

}