34 lines
1.1 KiB
Java
34 lines
1.1 KiB
Java
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// collections/CrossCollectionIteration2.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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import typeinfo.pets.*;
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import java.util.*;
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public class CrossCollectionIteration2 {
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public static void display(Iterable<Pet> ip) {
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Iterator<Pet> it = ip.iterator();
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while(it.hasNext()) {
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Pet p = it.next();
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System.out.print(p.id() + ":" + p + " ");
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}
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System.out.println();
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}
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public static void main(String[] args) {
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List<Pet> pets = Pets.list(8);
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LinkedList<Pet> petsLL = new LinkedList<>(pets);
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HashSet<Pet> petsHS = new HashSet<>(pets);
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TreeSet<Pet> petsTS = new TreeSet<>(pets);
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display(pets);
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display(petsLL);
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display(petsHS);
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display(petsTS);
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}
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}
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/* Output:
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0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
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0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
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0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
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5:Cymric 2:Cymric 7:Manx 1:Manx 3:Mutt 6:Pug 4:Pug 0:Rat
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*/
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