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 <div class="subTitle">org.eclipse.jetty.util</div>
 <h2 title="Class StringUtil" class="title">Class StringUtil</h2>
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 <ul class="inheritance">
 <li>java.lang.Object</li>
 <li>
 <ul class="inheritance">
 <li>org.eclipse.jetty.util.StringUtil</li>
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 <pre>public class <span class="typeNameLabel">StringUtil</span>
 extends java.lang.Object</pre>
 <div class="block">Fast String Utilities.

  These string utilities provide both convenience methods and
  performance improvements over most standard library versions. The
  main aim of the optimizations is to avoid object creation unless
  absolutely required.</div>
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 <h3>Field Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
 <caption><span>Fields</span><span class="tabEnd">&nbsp;</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.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#Z:Z__ISO_8859_1">__ISO_8859_1</a></span></code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#Z:Z__LINE_SEPARATOR">__LINE_SEPARATOR</a></span></code>
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
 <div class="block"><span class="deprecationComment">use <code>System.lineSeparator()</code> instead</span></div>
 </div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#Z:Z__UTF16">__UTF16</a></span></code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#Z:Z__UTF8">__UTF8</a></span></code>&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#ALL_INTERFACES">ALL_INTERFACES</a></span></code>&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#CRLF">CRLF</a></span></code>&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static char[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#lowercases">lowercases</a></span></code>&nbsp;</td>
 </tr>
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 <th class="colOne" scope="col">Constructor and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#StringUtil--">StringUtil</a></span>()</code>&nbsp;</td>
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 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#append-java.lang.StringBuilder-byte-int-">append</a></span>(java.lang.StringBuilder&nbsp;buf,
       byte&nbsp;b,
       int&nbsp;base)</code>
 <div class="block">append hex digit</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#append-java.lang.StringBuilder-java.lang.String-int-int-">append</a></span>(java.lang.StringBuilder&nbsp;buf,
       java.lang.String&nbsp;s,
       int&nbsp;offset,
       int&nbsp;length)</code>
 <div class="block">Append substring to StringBuilder</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#append2digits-java.lang.StringBuffer-int-">append2digits</a></span>(java.lang.StringBuffer&nbsp;buf,
              int&nbsp;i)</code>
 <div class="block">Append 2 digits (zero padded) to the StringBuffer</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#append2digits-java.lang.StringBuilder-int-">append2digits</a></span>(java.lang.StringBuilder&nbsp;buf,
              int&nbsp;i)</code>
 <div class="block">Append 2 digits (zero padded) to the StringBuilder</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static java.lang.String[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#arrayFromString-java.lang.String-">arrayFromString</a></span>(java.lang.String&nbsp;s)</code>
 <div class="block">Parse the string representation of a list using <a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.util.List-java.lang.String-int-int-"><code>csvSplit(List,String,int,int)</code></a></div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#asciiToLowerCase-java.lang.String-">asciiToLowerCase</a></span>(java.lang.String&nbsp;s)</code>
 <div class="block">fast lower case conversion.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>static java.util.List&lt;java.lang.String&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.util.List-java.lang.String-int-int-">csvSplit</a></span>(java.util.List&lt;java.lang.String&gt;&nbsp;list,
         java.lang.String&nbsp;s,
         int&nbsp;off,
         int&nbsp;len)</code>
 <div class="block">Split a quoted comma separated string to a list</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static java.lang.String[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.lang.String-">csvSplit</a></span>(java.lang.String&nbsp;s)</code>
 <div class="block">Parse a CSV string using <a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.util.List-java.lang.String-int-int-"><code>csvSplit(List,String, int, int)</code></a></div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>static java.lang.String[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.lang.String-int-int-">csvSplit</a></span>(java.lang.String&nbsp;s,
         int&nbsp;off,
         int&nbsp;len)</code>
 <div class="block">Parse a CSV string using <a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.util.List-java.lang.String-int-int-"><code>csvSplit(List,String, int, int)</code></a></div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#endsWithIgnoreCase-java.lang.String-java.lang.String-">endsWithIgnoreCase</a></span>(java.lang.String&nbsp;s,
                   java.lang.String&nbsp;w)</code>&nbsp;</td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#equals-java.lang.String-char:A-int-int-">equals</a></span>(java.lang.String&nbsp;s,
       char[]&nbsp;buf,
       int&nbsp;offset,
       int&nbsp;length)</code>&nbsp;</td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static byte[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#getBytes-java.lang.String-">getBytes</a></span>(java.lang.String&nbsp;s)</code>&nbsp;</td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static byte[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#getBytes-java.lang.String-java.lang.String-">getBytes</a></span>(java.lang.String&nbsp;s,
         java.lang.String&nbsp;charset)</code>&nbsp;</td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>static byte[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#getUtf8Bytes-java.lang.String-">getUtf8Bytes</a></span>(java.lang.String&nbsp;s)</code>&nbsp;</td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#indexFrom-java.lang.String-java.lang.String-">indexFrom</a></span>(java.lang.String&nbsp;s,
          java.lang.String&nbsp;chars)</code>
 <div class="block">returns the next index of a character from the chars string</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#indexOfControlChars-java.lang.String-">indexOfControlChars</a></span>(java.lang.String&nbsp;str)</code>
 <div class="block">Find the index of a control characters in String</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#isBlank-java.lang.String-">isBlank</a></span>(java.lang.String&nbsp;str)</code>
 <div class="block">Test if a string is null or only has whitespace characters in it.</div>
 </td>
 </tr>
 <tr id="i17" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#isNotBlank-java.lang.String-">isNotBlank</a></span>(java.lang.String&nbsp;str)</code>
 <div class="block">Test if a string is not null and contains at least 1 non-whitespace characters in it.</div>
 </td>
 </tr>
 <tr id="i18" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#isUTF8-java.lang.String-">isUTF8</a></span>(java.lang.String&nbsp;charset)</code>&nbsp;</td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#nonNull-java.lang.String-">nonNull</a></span>(java.lang.String&nbsp;s)</code>
 <div class="block">Return a non null string.</div>
 </td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#normalizeCharset-java.lang.String-">normalizeCharset</a></span>(java.lang.String&nbsp;s)</code>
 <div class="block">Convert alternate charset names (eg utf8) to normalized
  name (eg UTF-8).</div>
 </td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#normalizeCharset-java.lang.String-int-int-">normalizeCharset</a></span>(java.lang.String&nbsp;s,
                 int&nbsp;offset,
                 int&nbsp;length)</code>
 <div class="block">Convert alternate charset names (eg utf8) to normalized
  name (eg UTF-8).</div>
 </td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#printable-byte:A-">printable</a></span>(byte[]&nbsp;b)</code>&nbsp;</td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#printable-java.lang.String-">printable</a></span>(java.lang.String&nbsp;name)</code>&nbsp;</td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#replace-java.lang.String-java.lang.String-java.lang.String-">replace</a></span>(java.lang.String&nbsp;s,
        java.lang.String&nbsp;sub,
        java.lang.String&nbsp;with)</code>
 <div class="block">replace substrings within string.</div>
 </td>
 </tr>
 <tr id="i25" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#sanitizeXmlString-java.lang.String-">sanitizeXmlString</a></span>(java.lang.String&nbsp;html)</code>&nbsp;</td>
 </tr>
 <tr id="i26" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#sidBytesToString-byte:A-">sidBytesToString</a></span>(byte[]&nbsp;sidBytes)</code>
 <div class="block">Converts a binary SID to a string SID

  http://en.wikipedia.org/wiki/Security_Identifier

  S-1-IdentifierAuthority-SubAuthority1-SubAuthority2-...-SubAuthorityn</div>
 </td>
 </tr>
 <tr id="i27" class="rowColor">
 <td class="colFirst"><code>static byte[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#sidStringToBytes-java.lang.String-">sidStringToBytes</a></span>(java.lang.String&nbsp;sidString)</code>
 <div class="block">Converts a string SID to a binary SID

  http://en.wikipedia.org/wiki/Security_Identifier

  S-1-IdentifierAuthority-SubAuthority1-SubAuthority2-...-SubAuthorityn</div>
 </td>
 </tr>
 <tr id="i28" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#startsWithIgnoreCase-java.lang.String-java.lang.String-">startsWithIgnoreCase</a></span>(java.lang.String&nbsp;s,
                     java.lang.String&nbsp;w)</code>&nbsp;</td>
 </tr>
 <tr id="i29" class="rowColor">
 <td class="colFirst"><code>static int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#toInt-java.lang.String-int-">toInt</a></span>(java.lang.String&nbsp;string,
      int&nbsp;from)</code>
 <div class="block">Convert String to an integer.</div>
 </td>
 </tr>
 <tr id="i30" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#toLong-java.lang.String-">toLong</a></span>(java.lang.String&nbsp;string)</code>
 <div class="block">Convert String to an long.</div>
 </td>
 </tr>
 <tr id="i31" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#toString-byte:A-int-int-java.lang.String-">toString</a></span>(byte[]&nbsp;b,
         int&nbsp;offset,
         int&nbsp;length,
         java.lang.String&nbsp;charset)</code>&nbsp;</td>
 </tr>
 <tr id="i32" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#toUTF8String-byte:A-int-int-">toUTF8String</a></span>(byte[]&nbsp;b,
             int&nbsp;offset,
             int&nbsp;length)</code>&nbsp;</td>
 </tr>
 <tr id="i33" class="rowColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/jetty/util/StringUtil.html#truncate-java.lang.String-int-">truncate</a></span>(java.lang.String&nbsp;str,
         int&nbsp;maxSize)</code>
 <div class="block">Truncate a string to a max size.</div>
 </td>
 </tr>
 <tr id="i34" class="altColor">
 <td class="colFirst"><code>static java.lang.String</code></td>
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>An array of parsed values.</dd>
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 <pre>public static&nbsp;java.lang.String[]&nbsp;csvSplit(java.lang.String&nbsp;s,
                                           int&nbsp;off,
                                           int&nbsp;len)</pre>
 <div class="block">Parse a CSV string using <a href="../../../../org/eclipse/jetty/util/StringUtil.html#csvSplit-java.util.List-java.lang.String-int-int-"><code>csvSplit(List,String, int, int)</code></a></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>s</code> - The string to parse</dd>
 <dd><code>off</code> - The offset into the string to start parsing</dd>
 <dd><code>len</code> - The len in characters to parse</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>An array of parsed values.</dd>
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 <pre>public static&nbsp;java.util.List&lt;java.lang.String&gt;&nbsp;csvSplit(java.util.List&lt;java.lang.String&gt;&nbsp;list,
                                                         java.lang.String&nbsp;s,
                                                         int&nbsp;off,
                                                         int&nbsp;len)</pre>
 <div class="block">Split a quoted comma separated string to a list
  <p>Handle <a href="https://www.ietf.org/rfc/rfc4180.txt">rfc4180</a>-like
  CSV strings, with the exceptions:<ul>
  <li>quoted values may contain double quotes escaped with back-slash
  <li>Non-quoted values are trimmed of leading trailing white space
  <li>trailing commas are ignored
  <li>double commas result in a empty string value
  </ul></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>list</code> - The Collection to split to (or null to get a new list)</dd>
 <dd><code>s</code> - The string to parse</dd>
 <dd><code>off</code> - The offset into the string to start parsing</dd>
 <dd><code>len</code> - The len in characters to parse</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>list containing the parsed list values</dd>
 </dl>
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 <pre>public static&nbsp;java.lang.String&nbsp;sanitizeXmlString(java.lang.String&nbsp;html)</pre>
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 <h4>valueOf</h4>
 <pre>public static&nbsp;java.lang.String&nbsp;valueOf(java.lang.Object&nbsp;object)</pre>
 <div class="block">The String value of an Object
  <p>This method calls <code>String.valueOf(Object)</code> unless the object is null,
  in which case null is returned</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>object</code> - The object</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>String value or null</dd>
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