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## Package org.apache.lucene.util

Some utility classes.

See:
Description

Class Summary
ArrayUtil | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
BitUtil | A variety of high efficiencly bit twiddling routines.
BitVector | Optimized implementation of a vector of bits.
CloseableThreadLocal | Java's builtin ThreadLocal has a serious flaw: it can take an arbitrarily long amount of time to dereference the things you had stored in it, even once the ThreadLocal instance itself is no longer referenced.
Constants | Some useful constants.
DocIdBitSet | Simple DocIdSet and DocIdSetIterator backed by a BitSet
OpenBitSet | An "open" BitSet implementation that allows direct access to the array of words storing the bits.
OpenBitSetDISI |
OpenBitSetIterator | An iterator to iterate over set bits in an OpenBitSet.
Parameter | A serializable Enum class.
PriorityQueue | A PriorityQueue maintains a partial ordering of its elements such that the least element can always be found in constant time.
ScorerDocQueue | A ScorerDocQueue maintains a partial ordering of its Scorers such that the least Scorer can always be found in constant time.
SmallFloat | Floating point numbers smaller than 32 bits.
SortedVIntList | Store and iterate sorted integers in compressed form in RAM.
StringHelper | Methods for manipulating strings.
ToStringUtils | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
UnicodeUtil | Class to encode java's UTF16 char[] into UTF8 byte[] without always allocating a new byte[] as String.getBytes("UTF-8") does.
UnicodeUtil.UTF16Result |
UnicodeUtil.UTF8Result |

## Package org.apache.lucene.util Description

Some utility classes.

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