1. java.util.Collections
    3. static <T> boolean    addAll(Collection<? super T> c, T... elements)
    4. static <T> int    binarySearch(List<? extends T> list, T key, Comparator<? super T> c)
    5. static <T> void    copy(List<? super T> dest, List<? extends T> src)
    6. static <T> T    max(Collection<? extends T> coll, Comparator<? super T> comp)
    7. static <T> T    min(Collection<? extends T> coll, Comparator<? super T> comp)
    8. static <T> boolean    replaceAll(List<T> list, T oldVal, T newVal)
    9. static <T> void    sort(List<T> list, Comparator<? super T> c)
    11. Collections.sort()
    12. public static <T> void sort(List<T> list, Comparator<? super T> c) {
    13.         list.sort(c);
    14. }