本文整理了Java中java.lang.Integer.numberOfTrailingZeros()方法的一些代码示例，展示了Integer.numberOfTrailingZeros()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Integer.numberOfTrailingZeros()方法的具体详情如下：
包路径：java.lang.Integer
类名称：Integer
方法名：numberOfTrailingZeros

Integer.numberOfTrailingZeros介绍

[英]Determines the number of trailing zeros in the specified integer after the #lowestOneBit(int).
[中]确定指定整数中#lowstonebit（int）之后的尾随零数。

代码示例

代码示例来源：origin: org.apache.commons/commons-lang3

/**
 * <p>Creates a BitField instance.</p>
 *
 * @param mask the mask specifying which bits apply to this
 *  BitField. Bits that are set in this mask are the bits
 *  that this BitField operates on
 */
public BitField(final int mask) {
  _mask = mask;
  _shift_count = mask == 0 ? 0 : Integer.numberOfTrailingZeros(mask);
}

代码示例来源：origin: google/guava

@Override
 public E next() {
  int index = Integer.numberOfTrailingZeros(remainingSetBits);
  if (index == 32) {
   throw new NoSuchElementException();
  }
  remainingSetBits &= ~(1 << index);
  return elements.get(index);
 }
};

代码示例来源：origin: prestodb/presto

@Override
 public E next() {
  int index = Integer.numberOfTrailingZeros(remainingSetBits);
  if (index == 32) {
   throw new NoSuchElementException();
  }
  remainingSetBits &= ~(1 << index);
  return elements.get(index);
 }
};

代码示例来源：origin: libgdx/libgdx

/** Creates a new set with the specified initial capacity and load factor. This set will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntSet (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new set with the specified initial capacity and load factor. This set will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectSet (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (T[])new Object[capacity + stashCapacity];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new set with the specified initial capacity and load factor. This set will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntSet (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new set with the specified initial capacity and load factor. This set will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectSet (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (T[])new Object[capacity + stashCapacity];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntFloatMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
  valueTable = new float[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectIntMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = new int[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = (V[])new Object[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IdentityMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = (V[])new Object[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectFloatMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = new float[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntFloatMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
  valueTable = new float[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntIntMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
  valueTable = new int[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
  valueTable = (V[])new Object[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IdentityMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = (V[])new Object[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = (V[])new Object[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public ObjectIntMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = (K[])new Object[capacity + stashCapacity];
  valueTable = new int[keyTable.length];
}

代码示例来源：origin: libgdx/libgdx

/** Creates a new map with the specified initial capacity and load factor. This map will hold initialCapacity items before
 * growing the backing table.
 * @param initialCapacity If not a power of two, it is increased to the next nearest power of two. */
public IntIntMap (int initialCapacity, float loadFactor) {
  if (initialCapacity < 0) throw new IllegalArgumentException("initialCapacity must be >= 0: " + initialCapacity);
  initialCapacity = MathUtils.nextPowerOfTwo((int)Math.ceil(initialCapacity / loadFactor));
  if (initialCapacity > 1 << 30) throw new IllegalArgumentException("initialCapacity is too large: " + initialCapacity);
  capacity = initialCapacity;
  if (loadFactor <= 0) throw new IllegalArgumentException("loadFactor must be > 0: " + loadFactor);
  this.loadFactor = loadFactor;
  threshold = (int)(capacity * loadFactor);
  mask = capacity - 1;
  hashShift = 31 - Integer.numberOfTrailingZeros(capacity);
  stashCapacity = Math.max(3, (int)Math.ceil(Math.log(capacity)) * 2);
  pushIterations = Math.max(Math.min(capacity, 8), (int)Math.sqrt(capacity) / 8);
  keyTable = new int[capacity + stashCapacity];
  valueTable = new int[keyTable.length];
}

代码示例来源：origin: prestodb/presto

private PartitionedLookupSource(List<? extends LookupSource> lookupSources, List<Type> hashChannelTypes, Optional<OuterPositionTracker> outerPositionTracker)
{
  this.lookupSources = lookupSources.toArray(new LookupSource[lookupSources.size()]);
  // this generator is only used for getJoinPosition without a rawHash and in this case
  // the hash channels are always packed in a page without extra columns
  int[] hashChannels = new int[hashChannelTypes.size()];
  for (int i = 0; i < hashChannels.length; i++) {
    hashChannels[i] = i;
  }
  this.partitionGenerator = new LocalPartitionGenerator(new InterpretedHashGenerator(hashChannelTypes, hashChannels), lookupSources.size());
  this.partitionMask = lookupSources.size() - 1;
  this.shiftSize = numberOfTrailingZeros(lookupSources.size()) + 1;
  this.outerPositionTracker = outerPositionTracker.orElse(null);
}