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CollectionSequence.java
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45 lines (36 loc) · 1.14 KB
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package holding;
/**
* RUN:
* javac typeinfo/pets/*.java
* javac holding/CollectionSequence.java && java holding.CollectionSequence
* OUTPUT:
* 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 CollectionSequence extends AbstractCollection<Pet> {
private Pet[] pets = new Pets().createArray(8);
public int size() {
return pets.length;
}
public Iterator<Pet> iterator() {
return new Iterator<Pet>() {
private int index = 0;
public boolean hasNext() {
return index < pets.length;
}
public Pet next() {
return pets[index++];
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
public static void main(String[] args) {
CollectionSequence c = new CollectionSequence();
InterfaceVsIterator.display(c);
InterfaceVsIterator.display(c.iterator());
}
}