## Hierarchy For Package org.apache.lucene.util

Package Hierarchies:
  All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.lucene.util.ArrayUtil
  - org.apache.lucene.util.AttributeImpl (implements org.apache.lucene.util.Attribute, java.lang.Cloneable, java.io.Serializable)
  - org.apache.lucene.util.AttributeSource
  - org.apache.lucene.util.AttributeSource.AttributeFactory
  - org.apache.lucene.util.AttributeSource.State (implements java.lang.Cloneable)
  - org.apache.lucene.util.BitUtil
  - org.apache.lucene.util.BitVector (implements java.lang.Cloneable)
  - org.apache.lucene.util.CloseableThreadLocal
  - org.apache.lucene.util.Constants
  - org.apache.lucene.search.DocIdSet
    - org.apache.lucene.util.DocIdBitSet
    - org.apache.lucene.util.OpenBitSet (implements java.lang.Cloneable, java.io.Serializable)
      - org.apache.lucene.util.OpenBitSetDISI
    - org.apache.lucene.util.SortedVIntList
  - org.apache.lucene.search.DocIdSetIterator
    - org.apache.lucene.util.OpenBitSetIterator
  - org.apache.lucene.util.FieldCacheSanityChecker
  - org.apache.lucene.util.FieldCacheSanityChecker.Insanity
  - org.apache.lucene.util.FieldCacheSanityChecker.InsanityType
  - org.apache.lucene.util.IndexableBinaryStringTools
  - org.apache.lucene.util.MapOfSets
  - org.apache.lucene.util.MemoryModel
    - org.apache.lucene.util.AverageGuessMemoryModel
  - org.apache.lucene.util.NumericUtils
  - org.apache.lucene.util.NumericUtils.IntRangeBuilder
  - org.apache.lucene.util.NumericUtils.LongRangeBuilder
  - org.apache.lucene.util.Parameter (implements java.io.Serializable)
    - org.apache.lucene.util.Version (implements java.io.Serializable)
  - org.apache.lucene.util.PriorityQueue
  - org.apache.lucene.util.RamUsageEstimator
  - org.apache.lucene.util.ReaderUtil
  - org.apache.lucene.util.ScorerDocQueue
  - org.apache.lucene.util.SmallFloat
  - org.apache.lucene.util.SorterTemplate
  - org.apache.lucene.util.StringHelper
  - org.apache.lucene.util.StringInterner
    - org.apache.lucene.util.SimpleStringInterner
  - org.apache.lucene.util.ToStringUtils
  - org.apache.lucene.util.UnicodeUtil
  - org.apache.lucene.util.UnicodeUtil.UTF16Result
  - org.apache.lucene.util.UnicodeUtil.UTF8Result

## Interface Hierarchy

- org.apache.lucene.util.Attribute

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