Hande Iterator on smart

Question

hi all ,
I try the collection and the iterator , How can I modify my code then let my arraylist , linklist , and set share the same Iterator
*public class Collection {*
*public static void main(String[] args) {*
*// create string Object*
*String n[]={*
new String("Boston"),
new String(" New York")
ArrayList al = new ArrayList();
*// add elements to the array list*
al.addAll(Arrays.asList(n));
al.add(new Integer(1));
System.out.print("The arrayList of al: ");
*for (Iterator it = al.iterator(); it.hasNext(); ) {*
Object element = it.next();
System.out.println(element);
*// Set up testing data*
HashSet hs= new HashSet();
*// add integer*
hs.add(new Integer(100));
hs.add(new Integer(200));
hs.add(new Integer(300));
List list = Arrays.asList(n);
hs.add(list);
Iterator itr = hs.iterator();
System.out.println("HashSet contains : ");
while(itr.hasNext())
System.out.println(itr.next());
LinkedList mylink=new LinkedList();
*// add integer*
mylink.add(new Integer(4));
mylink.add(new Integer(5));
mylink.add(new Integer(6));
*// add string object*
mylink.add("Hello");
mylink.add("ya");
System.out.println("LinkedList contains : ");
itr = mylink.iterator();
while(itr.hasNext())
System.out.println(itr.next());
*}*

Answer 1

Hjava wrote:
so , not way to improve it? That depends on your requirements.
feel not good to have that much Iterator in one class!What are you talking about?