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PetCount4.java
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26 lines (25 loc) · 792 Bytes
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// typeinfo/PetCount4.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import typeinfo.pets.*;
import onjava.*;
public class PetCount4 {
public static void main(String[] args) {
TypeCounter counter = new TypeCounter(Pet.class);
Pets.stream()
.limit(20)
.peek(counter::count)
.forEach(p -> System.out.print(
p.getClass().getSimpleName() + " "));
System.out.println("\n" + counter);
}
}
/* Output:
Rat Manx Cymric Mutt Pug Cymric Pug Manx Cymric Rat
EgyptianMau Hamster EgyptianMau Mutt Mutt Cymric Mouse
Pug Mouse Cymric
{Dog=6, Manx=7, Cat=9, Rodent=5, Hamster=1, Rat=2,
Pug=3, Mutt=3, Cymric=5, EgyptianMau=2, Pet=20,
Mouse=2}
*/