import java.util.*;

public class ExtendedForTest1 {
    public static void main(String[] args) {
        List<String> list = new ArrayList<String>();
        for (String s : list) {
            System.out.println(s);
        }

        Map<String, String> map = new HashMap<String, String>();
        for (String s : map.values()) {
            System.out.println(s);
        }

        Set<String> set = new HashSet<String>();
        for (String s : set) {
            System.out.println(s);
        }

        Vector<String> vector = new Vector<String>();
        for (String s : vector) {
            System.out.println(s);
        }

        Iterator<String> it = list.iterator();
        for (String s : it) {
            System.out.println(s);
        }

        String[] array = new String[5];
        for (String s : array) {
            System.out.println(s);
        }
    }
}