java iterator()

public class Program {    public static void main(String[] args) {                Collection<String> list=new ArrayList<String>();        list.add("A");        list.add("B");        list.add("C");        list.add("D");        list.add("E");        list.add("F");        System.out.println(list);         for (Iterator<String> iter = list.iterator(); iter.hasNext();) {              String str = iter.next();                            if(str.equals("C")){                  iter.remove();              }              System.out.print(str);             }         System.out.println();                  System.out.println(list);    }}