public class CompoundIterator
extends java.lang.Object
implements java.util.Iterator
Iterator
interface and combines two
Iterator
objects into one single Iterator
.
The constructor takes two Iterator
arguments: parent
and child
. Calling next()
on this Iterator
will first try to return an element from the parent Iterator
and once the parent Iterator
does not have any more elements
it will return elements from the child Iterator
.
Constructor and Description |
---|
CompoundIterator(java.util.Iterator parent,
java.util.Iterator child)
Creates a
CompoundIterator based on parent
and child . |
Modifier and Type | Method and Description |
---|---|
boolean |
hasNext()
Returns
true if either parent or child iterator
has a next element; false otherwise. |
java.lang.Object |
next()
Returns the next element from the parent or the child
iterator object.
|
void |
remove()
Always throws
UnsupportedOperationException |
public CompoundIterator(java.util.Iterator parent, java.util.Iterator child)
CompoundIterator
based on parent
and child
. This CompountIterator
will first
return elements from parent
and then elements from
child
.parent
- the Iterator
from where to return the elements
first.child
- the Iterator
from where to return the elements
after parent
does not have elements any more.public boolean hasNext()
true
if either parent or child iterator
has a next element; false
otherwise.hasNext
in interface java.util.Iterator
true
if either parent or child iterator
has a next element; false
otherwise.public java.lang.Object next()
next
in interface java.util.Iterator
public void remove() throws java.lang.UnsupportedOperationException
UnsupportedOperationException
remove
in interface java.util.Iterator
java.lang.UnsupportedOperationException
- always!Copyright © 2010 - 2020 Adobe. All Rights Reserved