Java Reference
In-Depth Information
19
position
20 */
21
boolean
hasNext();
22
23 /**
24
Adds an element before the iterator position
25
and moves the iterator past the inserted element.
26 @param element
the element to add
27 */
28
void
add (Object element);
29
30 /**
31
Removes the last traversed element. This method may
32
only be called after a call to the next() method.
33 */
34
void
remove();
35
36 /**
37
Sets the last traversed element to a different
38
value.
39 @param element
the element to set
40 */
41
void
set(Object element);
42 }
681
682
S
ELF
C
HECK
3.
Trace through the addFirst method when adding an element to an empty
list.
4.
Conceptually, an iterator points between elements (see
Figure 3
). Does
the position reference point to the element to the left or to the element to
the right?
5.
Why does the add method have two separate cases?
