-
What is the output of this program?
import java.util.*;
public class Collection_iterators_Example
{
public static void main(String args[])
{
LinkedList listObject = new LinkedList();
listObject.add(new Integer(3));
listObject.add(new Integer(9));
listObject.add(new Integer(7));
listObject.add(new Integer(2));
Iterator itr = listObject.iterator();
Collections.reverse(listObject);
while(itr.hasNext())
System.out.print(itr.next() + " ");
}
}
-
- 2 7 9 3
- 3 9 7 2
- 2 3 7 9
- 7 9 3 2
- None of these
Correct Option: A
Collections.reverse(listObject) reverses the given listObject, the listObject was 3->9->7->2 after reversing it became 2->7->9->3.
