public class QueryList extends Queue { Queue queries; public QueryList() { queries = global new Queue(); } public boolean checkQuery(GlobalString x) { boolean set = false;; for (int i = 0 ; i < size; i++) { if (x.equals((GlobalString)elements[i])) { set = true; break; } } return set; } public void addQuery(GlobalString x) { queries.push(x); } }