Iterator problem

[Vijay Chandran]

    
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class Cert
{
    public static Iterator reverse(List list)
    {
        Collections.reverse(list);
        return list.iterator();
    }
    public static void main(String[] args)
    {
        List list = new ArrayList();
        list.add("1");
        list.add("2");
        list.add("3");
        for(Object obj : reverse(list))
        {
            System.out.println(obj);
        }
    }
}

Dear friends,
This code gives a compiler error: Can only iterate over an array or an instance of java.lang.Iterable

Kindly provide me the explanation of this compiler error

Regards,
Vijay

[Paul Michael]

The enhanced for loop in Java 5 works with the new Iterable interface which encapsulates an Iterator.

In your example, you are returning an Iterator instead of an Iterable.