How a collection embedded inside another collection can be read???

Question

Is there anybody can provide me with a small exemple of how I can access the element inside a collection (set) embedded inside another collection itself embedded inside another collection. Each collection is declare in their own class.
i.e. Class 1
private Set col2 = new HashSet;
Class 2
private Set col3 = new HashSet;
Class 3
private Set col4 = new HashSet;
How can I read the element belong to col4 since the col4 is accessible through col3 and col3 through col2????
Hope I am clear enough. Could someone help???
Thanks

Answer 1

hi,
If set contains set0, set1, set2 at 0 ,1 ,2 index
and u want to get the element at index 3 of set1 then u should proceed as :-
Set set = new HashSet ();
Set set0 = new HashSet ();
Set set1 = new HashSet ();
Set set2 = new HashSet ();
set0.add("hello");
set.add(set0);
set1.add("how");
set1.add("are");
set1.add("you");
set.add(set1);
set2.add("i")
set.add(set2);
Iterator iter = set.iterator() ;
iter.next();
Set outSet = (HashSet)iter.next()
And now iterate through this set to get the required element
Gaurav