When you are simple moving through List but you are not modifying the List object foreach is more efficient.In case you want to perform operations on each element of list individually taking out the element in such case use Iterator.

List<Fruits> arrFruits = new ArrayList<Fruits>();
Iterator<Fruits> itFrt = arrFruits.iterator();

while(itFrt.hasNext())
{
 Fruits frt = itFrt.next();
 System.out.println(frt);
}

ListIterator

• While using Iterator in particular to List using a ListIterator is more powerful over Iterator.
• ListIterator is bidirectional
• It also keep track of Indexes of next and previous elements
• It can replace last element it visited using set method

 List<fruits> arrFruits     = fruits.arrayList(5);
 ListIterator<fruits> itFrt = arrFruits.listIterator();

 while(itFrt.hasNext())
 {
   System.out.println(it.next()); 
   System.out.println(it.nextIndex()); 
   System.out.println(it.previousIndex()); 
 }