# Uses of Package
org.apache.commons.collections4.bloomfilter

Packages that use org.apache.commons.collections4.bloomfilter
Package
Description
org.apache.commons.collections4.bloomfilter
Implements Bloom filter classes and interfaces.

- Classes in org.apache.commons.collections4.bloomfilter used by org.apache.commons.collections4.bloomfilter
  Class
  Description
  ArrayCountingBloomFilter
  A counting Bloom filter using an int array to track cells for each enabled bit.
  BitMapExtractor
  Produces bit map longs for a Bloom filter.
  BloomFilter
  The interface that describes a Bloom filter.
  BloomFilterExtractor
  Produces Bloom filters from a collection (for example, `LayeredBloomFilter`).
  CellExtractor
  Some Bloom filter implementations use a count rather than a bit flag.
  CellExtractor.CellPredicate
  Represents an operation that accepts an `<index, count>` pair.
  CountingBloomFilter
  The interface that describes a Bloom filter that associates a count with each bit index rather than a bit.
  Hasher
  A Hasher creates `IndexExtractor`s based on the hash implementation and the provided `Shape`.
  IndexExtractor
  An object that produces indices of a Bloom filter.
  LayeredBloomFilter
  Layered Bloom filters are described in Zhiwang, Cen; Jungang, Xu; Jian, Sun (2010), "A multi-layer Bloom filter for duplicated URL detection", Proc. 3rd International Conference on Advanced Computer Theory and Engineering (ICACTE 2010), vol. 1, pp.
  LayerManager
  Implementation of the methods to manage the layers in a layered Bloom filter.
  LayerManager.Builder
  Builds new instances of `LayerManager`.
  LongBiPredicate
  Represents a function that accepts a two long-valued argument and produces a binary result.
  Shape
  The definition of a Bloom filter shape.
  SimpleBloomFilter
  A bloom filter using an array of bit maps to track enabled bits.
  SparseBloomFilter
  A bloom filter using a TreeSet of integers to track enabled bits.
  WrappedBloomFilter
  An abstract class to assist in implementing Bloom filter decorators.