Package org.apache.jackrabbit.oak.commons.collections

Class ListUtils

java.lang.Object
org.apache.jackrabbit.oak.commons.collections.ListUtils
public class ListUtils extends Object
Utility methods for List conversions.

  • Method Details

    • toList

      @NotNull public static <T> @NotNull List<T> toList(@NotNull @NotNull Iterable<? extends T> iterable)
      Convert an iterable to a list. The returning list is mutable and supports all optional operations.
      Type Parameters:
      T - the type of the elements
      Parameters:
      iterable - the iterable to convert
      Returns:
      the list

    • toLinkedList

      @NotNull public static <T> @NotNull List<T> toLinkedList(Iterable<T> iterable)
      Convert an iterable to a LinkedList. The returning LinkedList is mutable and supports all optional operations.
      Type Parameters:
      T - the type of the elements
      Parameters:
      iterable - the iterator to convert
      Returns:
      the LinkedList

    • toList

      @NotNull public static <T> @NotNull List<T> toList(Iterator<? extends T> iterator)
      Convert an iterator to a list. The returning list is mutable and supports all optional operations.
      Type Parameters:
      T - the type of the elements
      Parameters:
      iterator - the iterator to convert
      Returns:
      the list

    • partitionList

      @NotNull public static <T> @NotNull List<List<T>> partitionList(List<T> list, int n)
      Split a list into partitions of a given size.
      Type Parameters:
      T - the type of the elements
      Parameters:
      list - the list to partition
      n - the size of partitions
      Returns:
      a list of partitions. The resulting partitions aren’t a view of the main List, so any changes happening to the main List won’t affect the partitions.

    • reverse

      @NotNull public static <T> @NotNull List<T> reverse(List<T> l)
      Returns a new list containing the elements of the specified list in reverse order.
      Type Parameters:
      T - the type of elements in the list
      Parameters:
      l - the list to be reversed, must not be null
      Returns:
      a new list containing the elements of the specified list in reverse order
      Throws:
      NullPointerException - if the list is null