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<h2 title="Class BitSet" class="title">Class BitSet</h2>
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<li>java.util.BitSet</li>
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<pre>public class <span class="typeNameLabel">BitSet</span>
extends <a href="../lang/Object.html" title="class in java.lang">Object</a>
implements <a href="../lang/Cloneable.html" title="interface in java.lang">Cloneable</a>, <a href="../io/Serializable.html" title="interface in java.io">Serializable</a></pre>
<div class="block">This class implements a vector of bits that grows as needed. Each
component of the bit set has a <code>boolean</code> value. The
bits of a <code>BitSet</code> are indexed by nonnegative integers.
Individual indexed bits can be examined, set, or cleared. One
<code>BitSet</code> may be used to modify the contents of another
<code>BitSet</code> through logical AND, logical inclusive OR, and
logical exclusive OR operations.
<p>By default, all bits in the set initially have the value
<code>false</code>.
<p>Every bit set has a current size, which is the number of bits
of space currently in use by the bit set. Note that the size is
related to the implementation of a bit set, so it may change with
implementation. The length of a bit set relates to logical length
of a bit set and is defined independently of implementation.
<p>Unless otherwise noted, passing a null parameter to any of the
methods in a <code>BitSet</code> will result in a
<code>NullPointerException</code>.
<p>A <code>BitSet</code> is not safe for multithreaded use without
external synchronization.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../serialized-form.html#java.util.BitSet">Serialized Form</a></dd>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">BitSet</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates a new bit set.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(int)">BitSet</a></span>​(int nbits)</code></th>
<td class="colLast">
<div class="block">Creates a bit set whose initial size is large enough to explicitly
represent bits with indices in the range <code>0</code> through
<code>nbits-1</code>.</div>
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<table aria-labelledby="t0">
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor" id="i0">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#and(java.util.BitSet)">and</a></span>​(<a href="BitSet.html" title="class in java.util">BitSet</a> set)</code></th>
<td class="colLast">
<div class="block">Performs a logical <b>AND</b> of this target bit set with the
argument bit set.</div>
</td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#andNot(java.util.BitSet)">andNot</a></span>​(<a href="BitSet.html" title="class in java.util">BitSet</a> set)</code></th>
<td class="colLast">
<div class="block">Clears all of the bits in this <code>BitSet</code> whose corresponding
bit is set in the specified <code>BitSet</code>.</div>
</td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cardinality()">cardinality</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the number of bits set to <code>true</code> in this <code>BitSet</code>.</div>
</td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear()">clear</a></span>()</code></th>
<td class="colLast">
<div class="block">Sets all of the bits in this BitSet to <code>false</code>.</div>
</td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear(int)">clear</a></span>​(int bitIndex)</code></th>
<td class="colLast">
<div class="block">Sets the bit specified by the index to <code>false</code>.</div>
</td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear(int,int)">clear</a></span>​(int fromIndex,
int toIndex)</code></th>
<td class="colLast">
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to <code>false</code>.</div>
</td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code><a href="../lang/Object.html" title="class in java.lang">Object</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clone()">clone</a></span>()</code></th>
<td class="colLast">
<div class="block">Cloning this <code>BitSet</code> produces a new <code>BitSet</code>
that is equal to it.</div>
</td>
</tr>
<tr class="rowColor" id="i7">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(<a href="../lang/Object.html" title="class in java.lang">Object</a> obj)</code></th>
<td class="colLast">
<div class="block">Compares this object against the specified object.</div>
</td>
</tr>
<tr class="altColor" id="i8">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#flip(int)">flip</a></span>​(int bitIndex)</code></th>
<td class="colLast">
<div class="block">Sets the bit at the specified index to the complement of its
current value.</div>
</td>
</tr>
<tr class="rowColor" id="i9">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#flip(int,int)">flip</a></span>​(int fromIndex,
int toIndex)</code></th>
<td class="colLast">
<div class="block">Sets each bit from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to the complement of its current
value.</div>
</td>
</tr>
<tr class="altColor" id="i10">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#get(int)">get</a></span>​(int bitIndex)</code></th>
<td class="colLast">
<div class="block">Returns the value of the bit with the specified index.</div>
</td>
</tr>
<tr class="rowColor" id="i11">
<td class="colFirst"><code><a href="BitSet.html" title="class in java.util">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#get(int,int)">get</a></span>​(int fromIndex,
int toIndex)</code></th>
<td class="colLast">
<div class="block">Returns a new <code>BitSet</code> composed of bits from this <code>BitSet</code>
from <code>fromIndex</code> (inclusive) to <code>toIndex</code> (exclusive).</div>
</td>
</tr>
<tr class="altColor" id="i12">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the hash code value for this bit set.</div>
</td>
</tr>
<tr class="rowColor" id="i13">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#intersects(java.util.BitSet)">intersects</a></span>​(<a href="BitSet.html" title="class in java.util">BitSet</a> set)</code></th>
<td class="colLast">
<div class="block">Returns true if the specified <code>BitSet</code> has any bits set to
<code>true</code> that are also set to <code>true</code> in this <code>BitSet</code>.</div>
</td>
</tr>
<tr class="altColor" id="i14">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isEmpty()">isEmpty</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if this <code>BitSet</code> contains no bits that are set
to <code>true</code>.</div>
</td>
</tr>
<tr class="rowColor" id="i15">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#length()">length</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the "logical size" of this <code>BitSet</code>: the index of
the highest set bit in the <code>BitSet</code> plus one.</div>
</td>
</tr>
<tr class="altColor" id="i16">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nextClearBit(int)">nextClearBit</a></span>​(int fromIndex)</code></th>
<td class="colLast">
<div class="block">Returns the index of the first bit that is set to <code>false</code>
that occurs on or after the specified starting index.</div>
</td>
</tr>
<tr class="rowColor" id="i17">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nextSetBit(int)">nextSetBit</a></span>​(int fromIndex)</code></th>
<td class="colLast">
<div class="block">Returns the index of the first bit that is set to <code>true</code>
that occurs on or after the specified starting index.</div>
</td>
</tr>
<tr class="altColor" id="i18">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#or(java.util.BitSet)">or</a></span>​(<a href="BitSet.html" title="class in java.util">BitSet</a> set)</code></th>
<td class="colLast">
<div class="block">Performs a logical <b>OR</b> of this bit set with the bit set
argument.</div>
</td>
</tr>
<tr class="rowColor" id="i19">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#previousClearBit(int)">previousClearBit</a></span>​(int fromIndex)</code></th>
<td class="colLast">
<div class="block">Returns the index of the nearest bit that is set to <code>false</code>
that occurs on or before the specified starting index.</div>
</td>
</tr>
<tr class="altColor" id="i20">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#previousSetBit(int)">previousSetBit</a></span>​(int fromIndex)</code></th>
<td class="colLast">
<div class="block">Returns the index of the nearest bit that is set to <code>true</code>
that occurs on or before the specified starting index.</div>
</td>
</tr>
<tr class="rowColor" id="i21">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int)">set</a></span>​(int bitIndex)</code></th>
<td class="colLast">
<div class="block">Sets the bit at the specified index to <code>true</code>.</div>
</td>
</tr>
<tr class="altColor" id="i22">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int,boolean)">set</a></span>​(int bitIndex,
boolean value)</code></th>
<td class="colLast">
<div class="block">Sets the bit at the specified index to the specified value.</div>
</td>
</tr>
<tr class="rowColor" id="i23">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int,int)">set</a></span>​(int fromIndex,
int toIndex)</code></th>
<td class="colLast">
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to <code>true</code>.</div>
</td>
</tr>
<tr class="altColor" id="i24">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int,int,boolean)">set</a></span>​(int fromIndex,
int toIndex,
boolean value)</code></th>
<td class="colLast">
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to the specified value.</div>
</td>
</tr>
<tr class="rowColor" id="i25">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#size()">size</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the number of bits of space actually in use by this
<code>BitSet</code> to represent bit values.</div>
</td>
</tr>
<tr class="altColor" id="i26">
<td class="colFirst"><code><a href="stream/IntStream.html" title="interface in java.util.stream">IntStream</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stream()">stream</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a stream of indices for which this <code>BitSet</code>
contains a bit in the set state.</div>
</td>
</tr>
<tr class="rowColor" id="i27">
<td class="colFirst"><code>byte[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toByteArray()">toByteArray</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a new byte array containing all the bits in this bit set.</div>
</td>
</tr>
<tr class="altColor" id="i28">
<td class="colFirst"><code>long[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toLongArray()">toLongArray</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a new long array containing all the bits in this bit set.</div>
</td>
</tr>
<tr class="rowColor" id="i29">
<td class="colFirst"><code><a href="../lang/String.html" title="class in java.lang">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a string representation of this bit set.</div>
</td>
</tr>
<tr class="altColor" id="i30">
<td class="colFirst"><code>static <a href="BitSet.html" title="class in java.util">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(byte%5B%5D)">valueOf</a></span>​(byte[] bytes)</code></th>
<td class="colLast">
<div class="block">Returns a new bit set containing all the bits in the given byte array.</div>
</td>
</tr>
<tr class="rowColor" id="i31">
<td class="colFirst"><code>static <a href="BitSet.html" title="class in java.util">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(long%5B%5D)">valueOf</a></span>​(long[] longs)</code></th>
<td class="colLast">
<div class="block">Returns a new bit set containing all the bits in the given long array.</div>
</td>
</tr>
<tr class="altColor" id="i32">
<td class="colFirst"><code>static <a href="BitSet.html" title="class in java.util">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.nio.ByteBuffer)">valueOf</a></span>​(<a href="../nio/ByteBuffer.html" title="class in java.nio">ByteBuffer</a> bb)</code></th>
<td class="colLast">
<div class="block">Returns a new bit set containing all the bits in the given byte
buffer between its position and limit.</div>
</td>
</tr>
<tr class="rowColor" id="i33">
<td class="colFirst"><code>static <a href="BitSet.html" title="class in java.util">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.nio.LongBuffer)">valueOf</a></span>​(<a href="../nio/LongBuffer.html" title="class in java.nio">LongBuffer</a> lb)</code></th>
<td class="colLast">
<div class="block">Returns a new bit set containing all the bits in the given long
buffer between its position and limit.</div>
</td>
</tr>
<tr class="altColor" id="i34">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#xor(java.util.BitSet)">xor</a></span>​(<a href="BitSet.html" title="class in java.util">BitSet</a> set)</code></th>
<td class="colLast">
<div class="block">Performs a logical <b>XOR</b> of this bit set with the bit set
argument.</div>
</td>
</tr>
</tbody>
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<h3>Methods declared in class java.lang.<a href="../lang/Object.html" title="class in java.lang">Object</a></h3>
<code><a href="../lang/Object.html#finalize()">finalize</a>, <a href="../lang/Object.html#getClass()">getClass</a>, <a href="../lang/Object.html#notify()">notify</a>, <a href="../lang/Object.html#notifyAll()">notifyAll</a>, <a href="../lang/Object.html#wait()">wait</a>, <a href="../lang/Object.html#wait(long)">wait</a>, <a href="../lang/Object.html#wait(long,int)">wait</a></code></li>
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</section>
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<h3>Constructor Detail</h3>
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<h4>BitSet</h4>
<pre>public BitSet()</pre>
<div class="block">Creates a new bit set. All bits are initially <code>false</code>.</div>
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<h4>BitSet</h4>
<pre>public BitSet​(int nbits)</pre>
<div class="block">Creates a bit set whose initial size is large enough to explicitly
represent bits with indices in the range <code>0</code> through
<code>nbits-1</code>. All bits are initially <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nbits</code> - the initial size of the bit set</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/NegativeArraySizeException.html" title="class in java.lang">NegativeArraySizeException</a></code> - if the specified initial size
is negative</dd>
</dl>
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<pre class="methodSignature">public static <a href="BitSet.html" title="class in java.util">BitSet</a> valueOf​(long[] longs)</pre>
<div class="block">Returns a new bit set containing all the bits in the given long array.
<p>More precisely,
<br><code>BitSet.valueOf(longs).get(n) == ((longs[n/64] & (1L<<(n%64))) != 0)</code>
<br>for all <code>n < 64 * longs.length</code>.
<p>This method is equivalent to
<code>BitSet.valueOf(LongBuffer.wrap(longs))</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>longs</code> - a long array containing a little-endian representation
of a sequence of bits to be used as the initial bits of the
new bit set</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>BitSet</code> containing all the bits in the long array</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<pre class="methodSignature">public static <a href="BitSet.html" title="class in java.util">BitSet</a> valueOf​(<a href="../nio/LongBuffer.html" title="class in java.nio">LongBuffer</a> lb)</pre>
<div class="block">Returns a new bit set containing all the bits in the given long
buffer between its position and limit.
<p>More precisely,
<br><code>BitSet.valueOf(lb).get(n) == ((lb.get(lb.position()+n/64) & (1L<<(n%64))) != 0)</code>
<br>for all <code>n < 64 * lb.remaining()</code>.
<p>The long buffer is not modified by this method, and no
reference to the buffer is retained by the bit set.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>lb</code> - a long buffer containing a little-endian representation
of a sequence of bits between its position and limit, to be
used as the initial bits of the new bit set</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>BitSet</code> containing all the bits in the buffer in the
specified range</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<pre class="methodSignature">public static <a href="BitSet.html" title="class in java.util">BitSet</a> valueOf​(byte[] bytes)</pre>
<div class="block">Returns a new bit set containing all the bits in the given byte array.
<p>More precisely,
<br><code>BitSet.valueOf(bytes).get(n) == ((bytes[n/8] & (1<<(n%8))) != 0)</code>
<br>for all <code>n < 8 * bytes.length</code>.
<p>This method is equivalent to
<code>BitSet.valueOf(ByteBuffer.wrap(bytes))</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bytes</code> - a byte array containing a little-endian
representation of a sequence of bits to be used as the
initial bits of the new bit set</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>BitSet</code> containing all the bits in the byte array</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<pre class="methodSignature">public static <a href="BitSet.html" title="class in java.util">BitSet</a> valueOf​(<a href="../nio/ByteBuffer.html" title="class in java.nio">ByteBuffer</a> bb)</pre>
<div class="block">Returns a new bit set containing all the bits in the given byte
buffer between its position and limit.
<p>More precisely,
<br><code>BitSet.valueOf(bb).get(n) == ((bb.get(bb.position()+n/8) & (1<<(n%8))) != 0)</code>
<br>for all <code>n < 8 * bb.remaining()</code>.
<p>The byte buffer is not modified by this method, and no
reference to the buffer is retained by the bit set.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bb</code> - a byte buffer containing a little-endian representation
of a sequence of bits between its position and limit, to be
used as the initial bits of the new bit set</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a <code>BitSet</code> containing all the bits in the buffer in the
specified range</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<pre class="methodSignature">public byte[] toByteArray()</pre>
<div class="block">Returns a new byte array containing all the bits in this bit set.
<p>More precisely, if
<br><code>byte[] bytes = s.toByteArray();</code>
<br>then <code>bytes.length == (s.length()+7)/8</code> and
<br><code>s.get(n) == ((bytes[n/8] & (1<<(n%8))) != 0)</code>
<br>for all <code>n < 8 * bytes.length</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a byte array containing a little-endian representation
of all the bits in this bit set</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<h4>toLongArray</h4>
<pre class="methodSignature">public long[] toLongArray()</pre>
<div class="block">Returns a new long array containing all the bits in this bit set.
<p>More precisely, if
<br><code>long[] longs = s.toLongArray();</code>
<br>then <code>longs.length == (s.length()+63)/64</code> and
<br><code>s.get(n) == ((longs[n/64] & (1L<<(n%64))) != 0)</code>
<br>for all <code>n < 64 * longs.length</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a long array containing a little-endian representation
of all the bits in this bit set</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.7</dd>
</dl>
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<h4>flip</h4>
<pre class="methodSignature">public void flip​(int bitIndex)</pre>
<div class="block">Sets the bit at the specified index to the complement of its
current value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitIndex</code> - the index of the bit to flip</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
</dl>
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<pre class="methodSignature">public void flip​(int fromIndex,
int toIndex)</pre>
<div class="block">Sets each bit from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to the complement of its current
value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - index of the first bit to flip</dd>
<dd><code>toIndex</code> - index after the last bit to flip</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
or <code>toIndex</code> is negative, or <code>fromIndex</code> is
larger than <code>toIndex</code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
</dl>
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<h4>set</h4>
<pre class="methodSignature">public void set​(int bitIndex)</pre>
<div class="block">Sets the bit at the specified index to <code>true</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitIndex</code> - a bit index</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0</dd>
</dl>
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<h4>set</h4>
<pre class="methodSignature">public void set​(int bitIndex,
boolean value)</pre>
<div class="block">Sets the bit at the specified index to the specified value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitIndex</code> - a bit index</dd>
<dd><code>value</code> - a boolean value to set</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
</dl>
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<h4>set</h4>
<pre class="methodSignature">public void set​(int fromIndex,
int toIndex)</pre>
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to <code>true</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - index of the first bit to be set</dd>
<dd><code>toIndex</code> - index after the last bit to be set</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
or <code>toIndex</code> is negative, or <code>fromIndex</code> is
larger than <code>toIndex</code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
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<pre class="methodSignature">public void set​(int fromIndex,
int toIndex,
boolean value)</pre>
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to the specified value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - index of the first bit to be set</dd>
<dd><code>toIndex</code> - index after the last bit to be set</dd>
<dd><code>value</code> - value to set the selected bits to</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
or <code>toIndex</code> is negative, or <code>fromIndex</code> is
larger than <code>toIndex</code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
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<h4>clear</h4>
<pre class="methodSignature">public void clear​(int bitIndex)</pre>
<div class="block">Sets the bit specified by the index to <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitIndex</code> - the index of the bit to be cleared</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0</dd>
</dl>
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<h4>clear</h4>
<pre class="methodSignature">public void clear​(int fromIndex,
int toIndex)</pre>
<div class="block">Sets the bits from the specified <code>fromIndex</code> (inclusive) to the
specified <code>toIndex</code> (exclusive) to <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - index of the first bit to be cleared</dd>
<dd><code>toIndex</code> - index after the last bit to be cleared</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
or <code>toIndex</code> is negative, or <code>fromIndex</code> is
larger than <code>toIndex</code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
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<h4>clear</h4>
<pre class="methodSignature">public void clear()</pre>
<div class="block">Sets all of the bits in this BitSet to <code>false</code>.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
</dl>
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<h4>get</h4>
<pre class="methodSignature">public boolean get​(int bitIndex)</pre>
<div class="block">Returns the value of the bit with the specified index. The value
is <code>true</code> if the bit with the index <code>bitIndex</code>
is currently set in this <code>BitSet</code>; otherwise, the result
is <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitIndex</code> - the bit index</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the value of the bit with the specified index</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
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<pre class="methodSignature">public <a href="BitSet.html" title="class in java.util">BitSet</a> get​(int fromIndex,
int toIndex)</pre>
<div class="block">Returns a new <code>BitSet</code> composed of bits from this <code>BitSet</code>
from <code>fromIndex</code> (inclusive) to <code>toIndex</code> (exclusive).</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - index of the first bit to include</dd>
<dd><code>toIndex</code> - index after the last bit to include</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new <code>BitSet</code> from a range of this <code>BitSet</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if <code>fromIndex</code> is negative,
or <code>toIndex</code> is negative, or <code>fromIndex</code> is
larger than <code>toIndex</code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>
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<pre class="methodSignature">public int nextSetBit​(int fromIndex)</pre>
<div class="block">Returns the index of the first bit that is set to <code>true</code>
that occurs on or after the specified starting index. If no such
bit exists then <code>-1</code> is returned.
<p>To iterate over the <code>true</code> bits in a <code>BitSet</code>,
use the following loop:
<pre> <code>
for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1)) {
// operate on index i here
if (i == Integer.MAX_VALUE) {
break; // or (i+1) would overflow
}
}</code></pre></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fromIndex</code> - the index to start checking from (inclusive)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the index of the next set bit, or <code>-1</code> if there
is no such bit</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../lang/IndexOutOfBoundsException.html" title="class in java.lang">IndexOutOfBoundsException</a></code> - if the specified index is negative</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.4</dd>