class Collections { static int binarySearch(List list, Object key); static int binarySearch(List list, Object key, Comparator c); static void copy(List dest, List src); static Enumeration enumeration(Collection c); static void fill(List list, Object o); static Object max(Collection coll); static Object max(Collection coll, Comparator comp); static Object min(Collection coll); static Object min(Collection coll, Comparator comp); static List nCopies(int n, Object o); static void reverse(List l); static Comparator reverseOrder(); static void shuffle(List list); static void shuffle(List list, Random rnd); static Set singleton(Object o); static void sort(List list); static void sort(List list, Comparator c); static Collection synchronizedCollection(Collection c); static List synchronizedList(List list); static Map synchronizedMap(Map m); static Set synchronizedSet(Set s); static SortedMap synchronizedSortedMap(SortedMap m); static SortedSet synchronizedSortedSet(SortedSet s); static Collection unmodifiableCollection(Collection c); static List unmodifiableList(List list); static Map unmodifiableMap(Map m); static Set unmodifiableSet(Set s); static SortedMap unmodifiableSortedMap(SortedMap m); static SortedSet unmodifiableSortedSet(SortedSet s); }