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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>ByteBufferUtil (apache-cassandra API)</title> <meta name="date" content="2014-09-07"> <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar_top">  </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/ByteBufferUtil.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a 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different ways byte buffers can be used public void testArrayOffet() { byte[] b = "test_slice_array".getBytes(); ByteBuffer bb = ByteBuffer.allocate(1024); assert bb.position() == 0; assert bb.limit() == 1024; assert bb.capacity() == 1024; bb.put(b); assert bb.position() == b.length; assert bb.remaining() == bb.limit() - bb.position(); ByteBuffer bb2 = bb.slice(); assert bb2.position() == 0; //slice should begin at other buffers current position assert bb2.arrayOffset() == bb.position(); //to match the position in the underlying array one needs to //track arrayOffset assert bb2.limit()+bb2.arrayOffset() == bb.limit(); assert bb2.remaining() == bb.remaining(); } }</div> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_summary">  </a> <h3>Field Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> <caption><span>Fields</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Field and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#EMPTY_BYTE_BUFFER">EMPTY_BYTE_BUFFER</a></strong></code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_summary">  </a> <h3>Constructor Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colOne" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colOne"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#ByteBufferUtil()">ByteBufferUtil</a></strong>()</code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_summary">  </a> <h3>Method Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span>Methods</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#arrayCopy(java.nio.ByteBuffer,%20int,%20byte[],%20int,%20int)">arrayCopy</a></strong>(java.nio.ByteBuffer src, int srcPos, byte[] dst, int dstPos, int length)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#arrayCopy(java.nio.ByteBuffer,%20int,%20java.nio.ByteBuffer,%20int,%20int)">arrayCopy</a></strong>(java.nio.ByteBuffer src, int srcPos, java.nio.ByteBuffer dst, int dstPos, int length)</code> <div class="block">Transfer bytes from one ByteBuffer to another.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(double)">bytes</a></strong>(double d)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(float)">bytes</a></strong>(float f)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(java.net.InetAddress)">bytes</a></strong>(java.net.InetAddress address)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(int)">bytes</a></strong>(int i)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(long)">bytes</a></strong>(long n)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(java.lang.String)">bytes</a></strong>(java.lang.String s)</code> <div class="block">Encode a String in a ByteBuffer using UTF_8.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(java.lang.String,%20java.nio.charset.Charset)">bytes</a></strong>(java.lang.String s, java.nio.charset.Charset charset)</code> <div class="block">Encode a String in a ByteBuffer using the provided charset.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytes(java.util.UUID)">bytes</a></strong>(java.util.UUID uuid)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#bytesToHex(java.nio.ByteBuffer)">bytesToHex</a></strong>(java.nio.ByteBuffer bytes)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#clone(java.nio.ByteBuffer)">clone</a></strong>(java.nio.ByteBuffer buffer)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#compare(byte[],%20java.nio.ByteBuffer)">compare</a></strong>(byte[] o1, java.nio.ByteBuffer o2)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#compare(java.nio.ByteBuffer,%20byte[])">compare</a></strong>(java.nio.ByteBuffer o1, byte[] o2)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#compareSubArrays(java.nio.ByteBuffer,%20int,%20java.nio.ByteBuffer,%20int,%20int)">compareSubArrays</a></strong>(java.nio.ByteBuffer bytes1, int offset1, java.nio.ByteBuffer bytes2, int offset2, int length)</code> <div class="block">Compare two ByteBuffer at specified offsets for length.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#compareUnsigned(java.nio.ByteBuffer,%20java.nio.ByteBuffer)">compareUnsigned</a></strong>(java.nio.ByteBuffer o1, java.nio.ByteBuffer o2)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static byte[]</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#getArray(java.nio.ByteBuffer)">getArray</a></strong>(java.nio.ByteBuffer buffer)</code> <div class="block">You should almost never use this.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#getShortLength(java.nio.ByteBuffer,%20int)">getShortLength</a></strong>(java.nio.ByteBuffer bb, int position)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#hexToBytes(java.lang.String)">hexToBytes</a></strong>(java.lang.String str)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.io.InputStream</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#inputStream(java.nio.ByteBuffer)">inputStream</a></strong>(java.nio.ByteBuffer bytes)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static boolean</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#isPrefix(java.nio.ByteBuffer,%20java.nio.ByteBuffer)">isPrefix</a></strong>(java.nio.ByteBuffer prefix, java.nio.ByteBuffer value)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#lastIndexOf(java.nio.ByteBuffer,%20byte,%20int)">lastIndexOf</a></strong>(java.nio.ByteBuffer buffer, byte valueToFind, int startIndex)</code> <div class="block">ByteBuffer adaptation of org.apache.commons.lang3.ArrayUtils.lastIndexOf method</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#minimalBufferFor(java.nio.ByteBuffer)">minimalBufferFor</a></strong>(java.nio.ByteBuffer buf)</code> <div class="block">trims size of bytebuffer to exactly number of bytes in it, to do not hold too much memory</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#read(java.io.DataInput,%20int)">read</a></strong>(java.io.DataInput in, int length)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readBytes(java.nio.ByteBuffer,%20int)">readBytes</a></strong>(java.nio.ByteBuffer bb, int length)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static byte[]</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readBytes(java.io.DataInput,%20int)">readBytes</a></strong>(java.io.DataInput in, int length)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readBytesWithShortLength(java.nio.ByteBuffer)">readBytesWithShortLength</a></strong>(java.nio.ByteBuffer bb)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readShortLength(java.nio.ByteBuffer)">readShortLength</a></strong>(java.nio.ByteBuffer bb)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readShortLength(java.io.DataInput)">readShortLength</a></strong>(java.io.DataInput in)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readWithLength(java.io.DataInput)">readWithLength</a></strong>(java.io.DataInput in)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#readWithShortLength(java.io.DataInput)">readWithShortLength</a></strong>(java.io.DataInput in)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#skipShortLength(java.io.DataInput)">skipShortLength</a></strong>(java.io.DataInput in)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#string(java.nio.ByteBuffer)">string</a></strong>(java.nio.ByteBuffer buffer)</code> <div class="block">Decode a String representation.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#string(java.nio.ByteBuffer,%20java.nio.charset.Charset)">string</a></strong>(java.nio.ByteBuffer buffer, java.nio.charset.Charset charset)</code> <div class="block">Decode a String representation.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#string(java.nio.ByteBuffer,%20int,%20int)">string</a></strong>(java.nio.ByteBuffer buffer, int position, int length)</code> <div class="block">Decode a String representation.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#string(java.nio.ByteBuffer,%20int,%20int,%20java.nio.charset.Charset)">string</a></strong>(java.nio.ByteBuffer buffer, int position, int length, java.nio.charset.Charset charset)</code> <div class="block">Decode a String representation.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static double</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#toDouble(java.nio.ByteBuffer)">toDouble</a></strong>(java.nio.ByteBuffer bytes)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static float</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#toFloat(java.nio.ByteBuffer)">toFloat</a></strong>(java.nio.ByteBuffer bytes)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#toInt(java.nio.ByteBuffer)">toInt</a></strong>(java.nio.ByteBuffer bytes)</code> <div class="block">Convert a byte buffer to an integer.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static long</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#toLong(java.nio.ByteBuffer)">toLong</a></strong>(java.nio.ByteBuffer bytes)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#writeShortLength(java.nio.ByteBuffer,%20int)">writeShortLength</a></strong>(java.nio.ByteBuffer bb, int length)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#writeWithLength(byte[],%20java.io.DataOutput)">writeWithLength</a></strong>(byte[] bytes, java.io.DataOutput out)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#writeWithLength(java.nio.ByteBuffer,%20org.apache.cassandra.io.util.DataOutputPlus)">writeWithLength</a></strong>(java.nio.ByteBuffer bytes, <a href="../../../../org/apache/cassandra/io/util/DataOutputPlus.html" title="interface in org.apache.cassandra.io.util">DataOutputPlus</a> out)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/utils/ByteBufferUtil.html#writeWithShortLength(byte[],%20java.io.DataOutput)">writeWithShortLength</a></strong>(byte[] buffer, java.io.DataOutput out)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static void</code></td> <td class="colLast"><code><strong><a 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This method assumes that the encoding charset is UTF_8.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>buffer</code> - a byte buffer holding the string representation</dd> <dt><span class="strong">Returns:</span></dt><dd>the decoded string</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.nio.charset.CharacterCodingException</code></dd></dl> </li> </ul> <a name="string(java.nio.ByteBuffer, int, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>string</h4> <pre>public static java.lang.String string(java.nio.ByteBuffer buffer, int position, int length) throws java.nio.charset.CharacterCodingException</pre> <div class="block">Decode a String representation. This method assumes that the encoding charset is UTF_8.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>buffer</code> - a byte buffer holding the string representation</dd><dd><code>position</code> - the starting position in <code>buffer</code> to start decoding from</dd><dd><code>length</code> - the number of bytes from <code>buffer</code> to use</dd> <dt><span class="strong">Returns:</span></dt><dd>the decoded string</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.nio.charset.CharacterCodingException</code></dd></dl> </li> </ul> <a name="string(java.nio.ByteBuffer, int, int, java.nio.charset.Charset)">  </a> <ul class="blockList"> <li class="blockList"> <h4>string</h4> <pre>public static java.lang.String string(java.nio.ByteBuffer buffer, int position, int length, java.nio.charset.Charset charset) throws java.nio.charset.CharacterCodingException</pre> <div class="block">Decode a String representation.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>buffer</code> - a byte buffer holding the string representation</dd><dd><code>position</code> - the starting position in <code>buffer</code> to start decoding from</dd><dd><code>length</code> - the number of bytes from <code>buffer</code> to use</dd><dd><code>charset</code> - the String encoding charset</dd> <dt><span class="strong">Returns:</span></dt><dd>the decoded string</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.nio.charset.CharacterCodingException</code></dd></dl> </li> </ul> <a name="string(java.nio.ByteBuffer, java.nio.charset.Charset)">  </a> <ul class="blockList"> <li class="blockList"> <h4>string</h4> <pre>public static java.lang.String string(java.nio.ByteBuffer buffer, java.nio.charset.Charset charset) throws java.nio.charset.CharacterCodingException</pre> <div class="block">Decode a String representation.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>buffer</code> - a byte buffer holding the string representation</dd><dd><code>charset</code> - the String encoding charset</dd> <dt><span class="strong">Returns:</span></dt><dd>the decoded string</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.nio.charset.CharacterCodingException</code></dd></dl> </li> </ul> <a name="getArray(java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getArray</h4> <pre>public static byte[] getArray(java.nio.ByteBuffer buffer)</pre> <div class="block">You should almost never use this. Instead, use the write* methods to avoid copies.</div> </li> </ul> <a name="lastIndexOf(java.nio.ByteBuffer, byte, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>lastIndexOf</h4> <pre>public static int lastIndexOf(java.nio.ByteBuffer buffer, byte valueToFind, int startIndex)</pre> <div class="block">ByteBuffer adaptation of org.apache.commons.lang3.ArrayUtils.lastIndexOf method</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>buffer</code> - the array to traverse for looking for the object, may be <code>null</code></dd><dd><code>valueToFind</code> - the value to find</dd><dd><code>startIndex</code> - the start index (i.e. BB position) to travers backwards from</dd> <dt><span class="strong">Returns:</span></dt><dd>the last index (i.e. BB position) of the value within the array [between buffer.position() and buffer.limit()]; <code>-1</code> if not found.</dd></dl> </li> </ul> <a name="bytes(java.lang.String)">  </a> <ul class="blockList"> <li class="blockList"> <h4>bytes</h4> <pre>public static java.nio.ByteBuffer bytes(java.lang.String s)</pre> <div class="block">Encode a String in a ByteBuffer using UTF_8.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>s</code> - the string to encode</dd> <dt><span class="strong">Returns:</span></dt><dd>the encoded string</dd></dl> </li> </ul> <a name="bytes(java.lang.String, java.nio.charset.Charset)">  </a> <ul class="blockList"> <li class="blockList"> <h4>bytes</h4> <pre>public static java.nio.ByteBuffer bytes(java.lang.String s, java.nio.charset.Charset charset)</pre> <div class="block">Encode a String in a ByteBuffer using the provided charset.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>s</code> - the string to encode</dd><dd><code>charset</code> - the String encoding charset to use</dd> <dt><span class="strong">Returns:</span></dt><dd>the encoded string</dd></dl> </li> </ul> <a name="clone(java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>clone</h4> <pre>public static java.nio.ByteBuffer clone(java.nio.ByteBuffer buffer)</pre> <dl><dt><span class="strong">Returns:</span></dt><dd>a new copy of the data in @param buffer USUALLY YOU SHOULD USE ByteBuffer.duplicate() INSTEAD, which creates a new Buffer (so you can mutate its position without affecting the original) without copying the underlying array.</dd></dl> </li> </ul> <a name="arrayCopy(java.nio.ByteBuffer, int, byte[], int, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>arrayCopy</h4> <pre>public static void arrayCopy(java.nio.ByteBuffer src, int srcPos, byte[] dst, int dstPos, int length)</pre> </li> </ul> <a name="arrayCopy(java.nio.ByteBuffer, int, java.nio.ByteBuffer, int, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>arrayCopy</h4> <pre>public static void arrayCopy(java.nio.ByteBuffer src, int srcPos, java.nio.ByteBuffer dst, int dstPos, int length)</pre> <div class="block">Transfer bytes from one ByteBuffer to another. This function acts as System.arrayCopy() but for ByteBuffers.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>src</code> - the source ByteBuffer</dd><dd><code>srcPos</code> - starting position in the source ByteBuffer</dd><dd><code>dst</code> - the destination ByteBuffer</dd><dd><code>dstPos</code> - starting position in the destination ByteBuffer</dd><dd><code>length</code> - the number of bytes to copy</dd></dl> </li> </ul> <a name="writeWithLength(java.nio.ByteBuffer, org.apache.cassandra.io.util.DataOutputPlus)">  </a> <ul class="blockList"> <li class="blockList"> <h4>writeWithLength</h4> <pre>public static void writeWithLength(java.nio.ByteBuffer bytes, <a href="../../../../org/apache/cassandra/io/util/DataOutputPlus.html" title="interface in org.apache.cassandra.io.util">DataOutputPlus</a> out) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="writeWithLength(byte[], java.io.DataOutput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>writeWithLength</h4> <pre>public static void writeWithLength(byte[] bytes, java.io.DataOutput out) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="writeWithShortLength(java.nio.ByteBuffer, org.apache.cassandra.io.util.DataOutputPlus)">  </a> <ul class="blockList"> <li class="blockList"> <h4>writeWithShortLength</h4> <pre>public static void writeWithShortLength(java.nio.ByteBuffer buffer, <a href="../../../../org/apache/cassandra/io/util/DataOutputPlus.html" title="interface in org.apache.cassandra.io.util">DataOutputPlus</a> out) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="writeWithShortLength(byte[], java.io.DataOutput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>writeWithShortLength</h4> <pre>public static void writeWithShortLength(byte[] buffer, java.io.DataOutput out) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="readWithLength(java.io.DataInput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readWithLength</h4> <pre>public static java.nio.ByteBuffer readWithLength(java.io.DataInput in) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="readShortLength(java.io.DataInput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readShortLength</h4> <pre>public static int readShortLength(java.io.DataInput in) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="readWithShortLength(java.io.DataInput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readWithShortLength</h4> <pre>public static java.nio.ByteBuffer readWithShortLength(java.io.DataInput in) throws java.io.IOException</pre> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>in</code> - data input</dd> <dt><span class="strong">Returns:</span></dt><dd>An unsigned short in an integer.</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code> - if an I/O error occurs.</dd></dl> </li> </ul> <a name="skipShortLength(java.io.DataInput)">  </a> <ul class="blockList"> <li class="blockList"> <h4>skipShortLength</h4> <pre>public static java.nio.ByteBuffer skipShortLength(java.io.DataInput in) throws java.io.IOException</pre> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>in</code> - data input</dd> <dt><span class="strong">Returns:</span></dt><dd>null</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code> - if an I/O error occurs.</dd></dl> </li> </ul> <a name="read(java.io.DataInput, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>read</h4> <pre>public static java.nio.ByteBuffer read(java.io.DataInput in, int length) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="readBytes(java.io.DataInput, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readBytes</h4> <pre>public static byte[] readBytes(java.io.DataInput in, int length) throws java.io.IOException</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="toInt(java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>toInt</h4> <pre>public static int toInt(java.nio.ByteBuffer bytes)</pre> <div class="block">Convert a byte buffer to an integer. 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Compares the non equal bytes as unsigned.</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>bytes1</code> - First byte buffer to compare.</dd><dd><code>offset1</code> - Position to start the comparison at in the first array.</dd><dd><code>bytes2</code> - Second byte buffer to compare.</dd><dd><code>offset2</code> - Position to start the comparison at in the second array.</dd><dd><code>length</code> - How many bytes to compare?</dd> <dt><span class="strong">Returns:</span></dt><dd>-1 if byte1 is less than byte2, 1 if byte2 is less than byte1 or 0 if equal.</dd></dl> </li> </ul> <a name="bytes(java.net.InetAddress)">  </a> <ul class="blockList"> <li class="blockList"> <h4>bytes</h4> <pre>public static java.nio.ByteBuffer bytes(java.net.InetAddress address)</pre> </li> </ul> <a name="bytes(java.util.UUID)">  </a> <ul class="blockList"> <li class="blockList"> <h4>bytes</h4> <pre>public static java.nio.ByteBuffer bytes(java.util.UUID uuid)</pre> </li> </ul> <a name="isPrefix(java.nio.ByteBuffer, java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>isPrefix</h4> <pre>public static boolean isPrefix(java.nio.ByteBuffer prefix, java.nio.ByteBuffer value)</pre> </li> </ul> <a name="minimalBufferFor(java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>minimalBufferFor</h4> <pre>public static java.nio.ByteBuffer minimalBufferFor(java.nio.ByteBuffer buf)</pre> <div class="block">trims size of bytebuffer to exactly number of bytes in it, to do not hold too much memory</div> </li> </ul> <a name="getShortLength(java.nio.ByteBuffer, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getShortLength</h4> <pre>public static int getShortLength(java.nio.ByteBuffer bb, int position)</pre> </li> </ul> <a name="readShortLength(java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readShortLength</h4> <pre>public static int readShortLength(java.nio.ByteBuffer bb)</pre> </li> </ul> <a name="writeShortLength(java.nio.ByteBuffer, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>writeShortLength</h4> <pre>public static void writeShortLength(java.nio.ByteBuffer bb, int length)</pre> </li> </ul> <a name="readBytes(java.nio.ByteBuffer, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>readBytes</h4> <pre>public static java.nio.ByteBuffer readBytes(java.nio.ByteBuffer bb, int length)</pre> </li> </ul> <a name="readBytesWithShortLength(java.nio.ByteBuffer)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>readBytesWithShortLength</h4> <pre>public static java.nio.ByteBuffer readBytesWithShortLength(java.nio.ByteBuffer bb)</pre> </li> </ul> </li> </ul> </li> </ul> </div> </div>   <div class="bottomNav"><a name="navbar_bottom">  </a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/ByteBufferUtil.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../index-all.html">Index</a></li> <li><a href="../../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../../org/apache/cassandra/utils/BoundedStatsDeque.html" title="class in org.apache.cassandra.utils"><span class="strong">Prev Class</span></a></li> <li><a href="../../../../org/apache/cassandra/utils/BytesReadTracker.html" title="class in org.apache.cassandra.utils"><span class="strong">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../index.html?org/apache/cassandra/utils/ByteBufferUtil.html" target="_top">Frames</a></li> <li><a href="ByteBufferUtil.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_bottom"> <li><a href="../../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li><a href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_bottom">  </a></div>  <p class="legalCopy"><small>Copyright © 2014 The Apache Software Foundation</small></p> </body> </html>