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<h2 title="Class BitInputStream" class="title">Class BitInputStream</h2>
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<pre>public class <a href="../../../../../src-html/org/apache/commons/compress/utils/BitInputStream.html#line.31">BitInputStream</a>
extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre>
<div class="block">Reads bits from an InputStream.</div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>1.10</dd>
<dt><span class="strong">This class is not thread-safe</span></dt>
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<td class="colOne"><code><strong><a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#BitInputStream(java.io.InputStream,%20java.nio.ByteOrder)">BitInputStream</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in,
                            <a href="http://docs.oracle.com/javase/7/docs/api/java/nio/ByteOrder.html?is-external=true" title="class or interface in java.nio">ByteOrder</a>&nbsp;byteOrder)</code>
<div class="block">Constructor taking an InputStream and its bit arrangement.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#clearBitCache()">clearBitCache</a></strong>()</code>
<div class="block">Clears the cache of bits that have been read from the
 underlying stream but not yet provided via <a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#readBits(int)"><code>readBits(int)</code></a>.</div>
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<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#close()">close</a></strong>()</code>&nbsp;</td>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#readBits(int)">readBits</a></strong>(int&nbsp;count)</code>
<div class="block">Returns at most 63 bits read from the underlying stream.</div>
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<h4>BitInputStream</h4>
<pre>public&nbsp;<a href="../../../../../src-html/org/apache/commons/compress/utils/BitInputStream.html#line.52">BitInputStream</a>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in,
              <a href="http://docs.oracle.com/javase/7/docs/api/java/nio/ByteOrder.html?is-external=true" title="class or interface in java.nio">ByteOrder</a>&nbsp;byteOrder)</pre>
<div class="block">Constructor taking an InputStream and its bit arrangement.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>in</code> - the InputStream</dd><dd><code>byteOrder</code> - the bit arrangement across byte boundaries,
      either BIG_ENDIAN (aaaaabbb bb000000) or LITTLE_ENDIAN (bbbaaaaa 000000bb)</dd></dl>
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<h4>close</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/commons/compress/utils/BitInputStream.html#line.58">close</a>()
           throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true#close()" title="class or interface in java.io">close</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd>
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<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true#close()" title="class or interface in java.lang">close</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd>
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<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd></dl>
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<h4>clearBitCache</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/commons/compress/utils/BitInputStream.html#line.66">clearBitCache</a>()</pre>
<div class="block">Clears the cache of bits that have been read from the
 underlying stream but not yet provided via <a href="../../../../../org/apache/commons/compress/utils/BitInputStream.html#readBits(int)"><code>readBits(int)</code></a>.</div>
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<h4>readBits</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../src-html/org/apache/commons/compress/utils/BitInputStream.html#line.81">readBits</a>(int&nbsp;count)
              throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Returns at most 63 bits read from the underlying stream.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>count</code> - the number of bits to read, must be a positive
 number not bigger than 63.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the bits concatenated as a long using the stream's byte order.
         -1 if the end of the underlying stream has been reached before reading
         the requested number of bits</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on error</dd></dl>
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