43 lines
1.3 KiB
Java
43 lines
1.3 KiB
Java
// reflection/pets/PetCreator.java
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// (c)2021 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://OnJava8.com for more book information.
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// Using class literals
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// {java reflection.pets.PetCreator}
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package reflection.pets;
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import java.util.*;
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public class PetCreator extends Creator {
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// No try block needed.
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public static final
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List<Class<? extends Pet>> ALL_TYPES =
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Collections.unmodifiableList(Arrays.asList(
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Pet.class, Dog.class, Cat.class, Rodent.class,
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Mutt.class, Pug.class, EgyptianMau.class,
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Manx.class, Cymric.class, Rat.class,
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Mouse.class, Hamster.class));
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// Types for random creation:
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private static final
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List<Class<? extends Pet>> TYPES =
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ALL_TYPES.subList(
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ALL_TYPES.indexOf(Mutt.class),
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ALL_TYPES.size());
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@Override
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public List<Class<? extends Pet>> types() {
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return TYPES;
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}
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public static void main(String[] args) {
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System.out.println(TYPES);
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List<Pet> pets = new PetCreator().list(7);
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System.out.println(pets);
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}
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}
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/* Output:
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[class reflection.pets.Mutt, class reflection.pets.Pug,
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class reflection.pets.EgyptianMau, class
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reflection.pets.Manx, class reflection.pets.Cymric, class
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reflection.pets.Rat, class reflection.pets.Mouse, class
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reflection.pets.Hamster]
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[Rat, Manx, Cymric, Mutt, Pug, Cymric, Pug]
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*/
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