To have code which looks like this:
List<Item> items;
...
for (Item item : In.reverse(items))
{
...
}
Put this code into a file called "In.java":
import java.util.*;
public enum In {;
public static final <T> Iterable<T> reverse(final List<T> list) {
return new ListReverseIterable<T>(list);
}
class ListReverseIterable<T> implements Iterable<T> {
private final List<T> mList;
public ListReverseIterable(final List<T> list) {
mList = list;
}
public Iterator<T> iterator() {
return new Iterator<T>() {
final ListIterator<T> it = mList.listIterator(mList.size());
public boolean hasNext() {
return it.hasPrevious();
}
public T next() {
return it.previous();
}
public void remove() {
it.remove();
}
};
}
}
}