Following example demonstratres how to reverse a collection with the help of listIterator() and Collection.reverse() methods of Collection and Listiterator class .
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;
class UtilDemo3 {
public static void main(String[] args) {
String[] coins = { "A", "B", "C", "D", "E" };
List l = new ArrayList();
for (int i = 0; i < coins.length; i++)
l.add(coins[i]);
ListIterator liter = l.listIterator();
System.out.println("Before reversal");
while (liter.hasNext())
System.out.println(liter.next());
Collections.reverse(l);
liter = l.listIterator();
System.out.println("After reversal");
while (liter.hasNext())
System.out.println(liter.next());
}
}
Result:
The above code sample will produce the following result.
Before reversal
A
B
C
D
E
After reversal
E
D
C
B
A