@Override
public boolean hasNext() {
canremove = false;
if (nextObject != null) {
return true;
}
while (iterator.hasNext()) {
final Object obj = iterator.next();
final T f = filter.filter(obj);
if (f != null) {
nextObject = f;
return true;
}
}
return false;
}
@Override
public void remove() {
if (!canremove) {
throw new IllegalStateException(
"remove() can only be called "
+ "on the FilterIterator immediately after a successful "
+ "call to next(). A call to remove() immediately after "
+ "a call to hasNext() or remove() will also fail.");
}
canremove = false;
iterator.remove();
}
@Override
public Iterator<T> iterator() {
return new FilterIterator<T>(iterator.iterator(), filter);
}
