Iterable

Root interface for collections which allows iterating them.

Traversing

It can be iterated:

Iterator<String> itr;

itr = strings.iterator();

while(itr.hasNext()) {
   System.out.println(itr.next());
}

And it can be used in for-each loops:

for(String s : strings) {
   System.out.println(s);
}