Class CollectionUtils

java.lang.Object
org.opends.server.util.CollectionUtils
public final class CollectionUtils extends Object
Utility class for Collections.

  • Method Details

    • newArrayList

      @SafeVarargs public static <E> ArrayList<E> newArrayList(E... elements)
      Creates a new ArrayList with the provided elements.
      Type Parameters:
      E - the elements' type
      Parameters:
      elements - the elements to add to the new ArrayList
      Returns:
      a new ArrayList with the provided elements

    • newLinkedList

      @SafeVarargs public static <E> LinkedList<E> newLinkedList(E... elements)
      Creates a new LinkedList with the provided elements.
      Type Parameters:
      E - the elements' type
      Parameters:
      elements - the elements to add to the new LinkedList
      Returns:
      a new LinkedList with the provided elements

    • newHashSet

      @SafeVarargs public static <E> HashSet<E> newHashSet(E... elements)
      Creates a new HashSet with the provided elements.
      Type Parameters:
      E - the elements' type
      Parameters:
      elements - the elements to add to the new HashSet
      Returns:
      a new HashSet with the provided elements

    • newTreeSet

      @SafeVarargs public static <E> TreeSet<E> newTreeSet(E... elements)
      Creates a new TreeSet with the provided elements.
      Type Parameters:
      E - the elements' type
      Parameters:
      elements - the elements to add to the new TreeSet
      Returns:
      a new TreeSet with the provided elements

    • collect

      public static <C extends Collection<E>, E> C collect(Iterable<E> iterable, C outputCollection)
      Collects all the elements from the provided iterable into the provided collection.
      Type Parameters:
      C - The type of the collection
      E - The type of the iterable's elements
      Parameters:
      iterable - the iterable from which to read elements
      outputCollection - the collection where to add the iterable's elements
      Returns:
      the provided collection

    • addAll

      public static <E, C extends Collection<E>> void addAll(C dest, Iterable<E> source)
      Adds all the elements from the provided iterable into the provided collection.
      Type Parameters:
      E - type of the elements to add
      C - type of the collection where to add
      Parameters:
      dest - the collection where elements will be added
      source - the iterable where elements will be read from