@TestpublicvoidwhenIteratingTreeSet_shouldIterateTreeSetInAscendingOrder(){ Set<String> treeSet =newTreeSet<>(); treeSet.add("First"); treeSet.add("Second"); treeSet.add("Third"); Iterator<String> itr = treeSet.iterator();while(itr.hasNext()) { System.out.println(itr.next()); } }...