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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<p class="subTitle">org.jdom</p>
<h2 title="Class Verifier" class="title">Class Verifier</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>org.jdom.Verifier</li>
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<pre>public final class <strong>Verifier</strong>
extends java.lang.Object</pre>
<div class="block">A utility class to handle well-formedness checks on names, data, and other
 verification tasks for JDOM. The class is final and may not be subclassed.</div>
<dl><dt><span class="strong">Version:</span></dt>
  <dd>$Revision: 1.57 $, $Date: 2009/07/23 05:54:23 $</dd>
<dt><span class="strong">Author:</span></dt>
  <dd>Brett McLaughlin, Elliotte Rusty Harold, Jason Hunter, Bradley S. Huffman</dd></dl>
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<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">&nbsp;</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 java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkAttributeName(java.lang.String)">checkAttributeName</a></strong>(java.lang.String&nbsp;name)</code>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code> name.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkCDATASection(java.lang.String)">checkCDATASection</a></strong>(java.lang.String&nbsp;data)</code>
<div class="block">This will check the supplied data to see if it is legal for use as
 JDOM <code><a href="../../org/jdom/CDATA.html" title="class in org.jdom"><code>CDATA</code></a></code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkCharacterData(java.lang.String)">checkCharacterData</a></strong>(java.lang.String&nbsp;text)</code>
<div class="block">This will check the supplied string to see if it only contains
 characters allowed by the XML 1.0 specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkCommentData(java.lang.String)">checkCommentData</a></strong>(java.lang.String&nbsp;data)</code>
<div class="block">This will check the supplied data to see if it is legal for use as
 JDOM <code><a href="../../org/jdom/Comment.html" title="class in org.jdom"><code>Comment</code></a></code> data.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkElementName(java.lang.String)">checkElementName</a></strong>(java.lang.String&nbsp;name)</code>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code> name.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceCollision(org.jdom.Attribute, org.jdom.Element)">checkNamespaceCollision</a></strong>(<a href="../../org/jdom/Attribute.html" title="class in org.jdom">Attribute</a>&nbsp;attribute,
                       <a href="../../org/jdom/Element.html" title="class in org.jdom">Element</a>&nbsp;element)</code>
<div class="block">Check if <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code>'s namespace collides with a 
 <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code>'s namespace.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceCollision(org.jdom.Namespace, org.jdom.Attribute)">checkNamespaceCollision</a></strong>(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                       <a href="../../org/jdom/Attribute.html" title="class in org.jdom">Attribute</a>&nbsp;attribute)</code>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with a
 <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code>'s namespace.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceCollision(org.jdom.Namespace, org.jdom.Element)">checkNamespaceCollision</a></strong>(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                       <a href="../../org/jdom/Element.html" title="class in org.jdom">Element</a>&nbsp;element)</code>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with a
 <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code>'s namespace.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceCollision(org.jdom.Namespace, java.util.List)">checkNamespaceCollision</a></strong>(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                       java.util.List&nbsp;list)</code>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with any namespace
 from a list of objects.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceCollision(org.jdom.Namespace, org.jdom.Namespace)">checkNamespaceCollision</a></strong>(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                       <a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;other)</code>
<div class="block">Check if two namespaces collide.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespacePrefix(java.lang.String)">checkNamespacePrefix</a></strong>(java.lang.String&nbsp;prefix)</code>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> prefix.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkNamespaceURI(java.lang.String)">checkNamespaceURI</a></strong>(java.lang.String&nbsp;uri)</code>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> URI.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkProcessingInstructionData(java.lang.String)">checkProcessingInstructionData</a></strong>(java.lang.String&nbsp;data)</code>
<div class="block">This will check the supplied data to see if it is legal for use as
 <code><a href="../../org/jdom/ProcessingInstruction.html" title="class in org.jdom"><code>ProcessingInstruction</code></a></code> data.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkProcessingInstructionTarget(java.lang.String)">checkProcessingInstructionTarget</a></strong>(java.lang.String&nbsp;target)</code>
<div class="block">This will check the supplied data to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/ProcessingInstruction.html" title="class in org.jdom"><code>ProcessingInstruction</code></a></code> target.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkPublicID(java.lang.String)">checkPublicID</a></strong>(java.lang.String&nbsp;publicID)</code>
<div class="block">This will ensure that the data for a public identifier
 is legal.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkSystemLiteral(java.lang.String)">checkSystemLiteral</a></strong>(java.lang.String&nbsp;systemLiteral)</code>
<div class="block">This will ensure that the data for a system literal
 is legal.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkURI(java.lang.String)">checkURI</a></strong>(java.lang.String&nbsp;uri)</code>
<div class="block">
 Checks a string to see if it is a legal RFC 2396 URI.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#checkXMLName(java.lang.String)">checkXMLName</a></strong>(java.lang.String&nbsp;name)</code>
<div class="block">This is a utility function for sharing the base process of checking
 any XML name.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#decodeSurrogatePair(char, char)">decodeSurrogatePair</a></strong>(char&nbsp;high,
                   char&nbsp;low)</code>
<div class="block">This is a utility function to decode a non-BMP 
 UTF-16 surrogate pair.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isHexDigit(char)">isHexDigit</a></strong>(char&nbsp;c)</code>
<div class="block">
 This is a utility function for determining whether a specified
 Unicode character is a hexadecimal digit as defined in RFC 2396;
 that is, one of the ASCII characters 0-9, a-f, or A-F.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isHighSurrogate(char)">isHighSurrogate</a></strong>(char&nbsp;ch)</code>
<div class="block">This is a function for determining whether the
 specified character is the high 16 bits in a 
 UTF-16 surrogate pair.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isLowSurrogate(char)">isLowSurrogate</a></strong>(char&nbsp;ch)</code>
<div class="block">This is a function for determining whether the 
 specified character is the low 16 bits in a 
 UTF-16 surrogate pair.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isURICharacter(char)">isURICharacter</a></strong>(char&nbsp;c)</code>
<div class="block">
 This is a utility function for determining whether
 a specified Unicode character is legal in URI references
 as determined by RFC 2396.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLCharacter(int)">isXMLCharacter</a></strong>(int&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 character is a character according to production 2 of the 
 XML 1.0 specification.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLCombiningChar(char)">isXMLCombiningChar</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified character
 is a combining character according to production 87
 of the XML 1.0 specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLDigit(char)">isXMLDigit</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 Unicode character
 is a digit according to production 88 of the XML 1.0 specification.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLExtender(char)">isXMLExtender</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 character is an extender according to production 88 of the XML 1.0
 specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLLetter(char)">isXMLLetter</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified character
 is a letter according to production 84 of the XML 1.0 specification.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLLetterOrDigit(char)">isXMLLetterOrDigit</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 character is a letter or digit according to productions 84 and 88
 of the XML 1.0 specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLNameCharacter(char)">isXMLNameCharacter</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 character is a name character according to production 4 of the 
 XML 1.0 specification.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLNameStartCharacter(char)">isXMLNameStartCharacter</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 character is a legal name start character according to production 5
 of the XML 1.0 specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLPublicIDCharacter(char)">isXMLPublicIDCharacter</a></strong>(char&nbsp;c)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/jdom/Verifier.html#isXMLWhitespace(char)">isXMLWhitespace</a></strong>(char&nbsp;c)</code>
<div class="block">This is a utility function for determining whether a specified 
 Unicode character is a whitespace character according to production 3
 of the XML 1.0 specification.</div>
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<pre>public static&nbsp;java.lang.String&nbsp;checkElementName(java.lang.String&nbsp;name)</pre>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code> name.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - <code>String</code> name to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason name is illegal, or
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<pre>public static&nbsp;java.lang.String&nbsp;checkAttributeName(java.lang.String&nbsp;name)</pre>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code> name.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - <code>String</code> name to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason name is illegal, or
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<pre>public static&nbsp;java.lang.String&nbsp;checkCharacterData(java.lang.String&nbsp;text)</pre>
<div class="block">This will check the supplied string to see if it only contains
 characters allowed by the XML 1.0 specification. The C0 controls
 (e.g. null, vertical tab, formfeed, etc.) are specifically excluded
 except for carriage return, linefeed, and the horizontal tab.
 Surrogates are also excluded. 
 <p>
 This method is useful for checking element content and attribute
 values. Note that characters 
 like " and &lt; are allowed in attribute values and element content. 
 They will simply be escaped as &quot; or &lt; 
 when the value is serialized. 
 </p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>text</code> - <code>String</code> value to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason name is illegal, or
         <code>null</code> if name is OK.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkCDATASection(java.lang.String&nbsp;data)</pre>
<div class="block">This will check the supplied data to see if it is legal for use as
 JDOM <code><a href="../../org/jdom/CDATA.html" title="class in org.jdom"><code>CDATA</code></a></code>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - <code>String</code> data to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason data is illegal, or
         <code>null</code> is name is OK.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkNamespacePrefix(java.lang.String&nbsp;prefix)</pre>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> prefix.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>prefix</code> - <code>String</code> prefix to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason name is illegal, or
         <code>null</code> if name is OK.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceURI(java.lang.String&nbsp;uri)</pre>
<div class="block">This will check the supplied name to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> URI.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>uri</code> - <code>String</code> URI to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason name is illegal, or
         <code>null</code> if name is OK.</dd></dl>
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<h4>checkNamespaceCollision</h4>
<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceCollision(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                                       <a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;other)</pre>
<div class="block">Check if two namespaces collide.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>namespace</code> - <code>Namespace</code> to check.</dd><dd><code>other</code> - <code>Namespace</code> to check against.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason for collision, or
         <code>null</code> if no collision.</dd></dl>
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<h4>checkNamespaceCollision</h4>
<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceCollision(<a href="../../org/jdom/Attribute.html" title="class in org.jdom">Attribute</a>&nbsp;attribute,
                                       <a href="../../org/jdom/Element.html" title="class in org.jdom">Element</a>&nbsp;element)</pre>
<div class="block">Check if <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code>'s namespace collides with a 
 <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code>'s namespace.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>attribute</code> - <code>Attribute</code> to check.</dd><dd><code>element</code> - <code>Element</code> to check against.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason for collision, or
         <code>null</code> if no collision.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceCollision(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                                       <a href="../../org/jdom/Element.html" title="class in org.jdom">Element</a>&nbsp;element)</pre>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with a
 <code><a href="../../org/jdom/Element.html" title="class in org.jdom"><code>Element</code></a></code>'s namespace.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>namespace</code> - <code>Namespace</code> to check.</dd><dd><code>element</code> - <code>Element</code> to check against.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason for collision, or
         <code>null</code> if no collision.</dd></dl>
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<h4>checkNamespaceCollision</h4>
<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceCollision(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                                       <a href="../../org/jdom/Attribute.html" title="class in org.jdom">Attribute</a>&nbsp;attribute)</pre>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with a
 <code><a href="../../org/jdom/Attribute.html" title="class in org.jdom"><code>Attribute</code></a></code>'s namespace.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>namespace</code> - <code>Namespace</code> to check.</dd><dd><code>attribute</code> - <code>Attribute</code> to check against.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason for collision, or
         <code>null</code> if no collision.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkNamespaceCollision(<a href="../../org/jdom/Namespace.html" title="class in org.jdom">Namespace</a>&nbsp;namespace,
                                       java.util.List&nbsp;list)</pre>
<div class="block">Check if a <code><a href="../../org/jdom/Namespace.html" title="class in org.jdom"><code>Namespace</code></a></code> collides with any namespace
 from a list of objects.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>namespace</code> - <code>Namespace</code> to check.</dd><dd><code>list</code> - <code>List</code> to check against.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason for collision, or
         <code>null</code> if no collision.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkProcessingInstructionTarget(java.lang.String&nbsp;target)</pre>
<div class="block">This will check the supplied data to see if it is legal for use as
 a JDOM <code><a href="../../org/jdom/ProcessingInstruction.html" title="class in org.jdom"><code>ProcessingInstruction</code></a></code> target.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>target</code> - <code>String</code> target to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason target is illegal, or
         <code>null</code> if target is OK.</dd></dl>
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<h4>checkProcessingInstructionData</h4>
<pre>public static&nbsp;java.lang.String&nbsp;checkProcessingInstructionData(java.lang.String&nbsp;data)</pre>
<div class="block">This will check the supplied data to see if it is legal for use as
 <code><a href="../../org/jdom/ProcessingInstruction.html" title="class in org.jdom"><code>ProcessingInstruction</code></a></code> data. Besides checking that
 all the characters are allowed in XML, this also checks
 that the data does not contain the PI end-string "?&gt;".</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - <code>String</code> data to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason data is illegal, or
         <code>null</code> if data is OK.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkCommentData(java.lang.String&nbsp;data)</pre>
<div class="block">This will check the supplied data to see if it is legal for use as
 JDOM <code><a href="../../org/jdom/Comment.html" title="class in org.jdom"><code>Comment</code></a></code> data.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - <code>String</code> data to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason data is illegal, or
         <code>null</code> if data is OK.</dd></dl>
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<h4>decodeSurrogatePair</h4>
<pre>public static&nbsp;int&nbsp;decodeSurrogatePair(char&nbsp;high,
                      char&nbsp;low)</pre>
<div class="block">This is a utility function to decode a non-BMP 
 UTF-16 surrogate pair.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>high</code> - high 16 bits</dd><dd><code>low</code> - low 16 bits</dd>
<dt><span class="strong">Returns:</span></dt><dd>decoded character</dd></dl>
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<h4>isXMLPublicIDCharacter</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLPublicIDCharacter(char&nbsp;c)</pre>
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<pre>public static&nbsp;java.lang.String&nbsp;checkPublicID(java.lang.String&nbsp;publicID)</pre>
<div class="block">This will ensure that the data for a public identifier
 is legal.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>publicID</code> - <code>String</code> public ID to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason public ID is illegal, or
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<pre>public static&nbsp;java.lang.String&nbsp;checkSystemLiteral(java.lang.String&nbsp;systemLiteral)</pre>
<div class="block">This will ensure that the data for a system literal
 is legal.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>systemLiteral</code> - <code>String</code> system literal to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason system literal is illegal, or
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<pre>public static&nbsp;java.lang.String&nbsp;checkXMLName(java.lang.String&nbsp;name)</pre>
<div class="block">This is a utility function for sharing the base process of checking
 any XML name.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - <code>String</code> to check for XML name compliance.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason the name is illegal, or
         <code>null</code> if OK.</dd></dl>
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<pre>public static&nbsp;java.lang.String&nbsp;checkURI(java.lang.String&nbsp;uri)</pre>
<div class="block"><p>
 Checks a string to see if it is a legal RFC 2396 URI.
 Both absolute and relative URIs are supported.
 </p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>uri</code> - <code>String</code> to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> reason the URI is illegal, or
         <code>null</code> if OK.</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isHexDigit(char&nbsp;c)</pre>
<div class="block"><p>
 This is a utility function for determining whether a specified
 Unicode character is a hexadecimal digit as defined in RFC 2396;
 that is, one of the ASCII characters 0-9, a-f, or A-F.
 </p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - to check for hex digit.</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if it's allowed, false otherwise.</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isHighSurrogate(char&nbsp;ch)</pre>
<div class="block">This is a function for determining whether the
 specified character is the high 16 bits in a 
 UTF-16 surrogate pair.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>ch</code> - character to check</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if the character is a high surrogate, false otherwise</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isLowSurrogate(char&nbsp;ch)</pre>
<div class="block">This is a function for determining whether the 
 specified character is the low 16 bits in a 
 UTF-16 surrogate pair.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>ch</code> - character to check</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if the character is a low surrogate, false otherwise.</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isURICharacter(char&nbsp;c)</pre>
<div class="block"><p>
 This is a utility function for determining whether
 a specified Unicode character is legal in URI references
 as determined by RFC 2396.
 </p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for URI reference compliance.</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if it's allowed, false otherwise.</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isXMLCharacter(int&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 character is a character according to production 2 of the 
 XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML compliance</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a character, 
                                false otherwise</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isXMLNameCharacter(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 character is a name character according to production 4 of the 
 XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML name compliance.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a name character, 
                                false otherwise.</dd></dl>
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<h4>isXMLNameStartCharacter</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLNameStartCharacter(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 character is a legal name start character according to production 5
 of the XML 1.0 specification. This production does allow names
 to begin with colons which the Namespaces in XML Recommendation
 disallows.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML name start compliance.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a name start character, 
                                false otherwise.</dd></dl>
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<h4>isXMLLetterOrDigit</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLLetterOrDigit(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 character is a letter or digit according to productions 84 and 88
 of the XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's letter or digit, 
                                false otherwise.</dd></dl>
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<h4>isXMLLetter</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLLetter(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified character
 is a letter according to production 84 of the XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML name compliance.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> true if it's a letter, false otherwise.</dd></dl>
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<h4>isXMLCombiningChar</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLCombiningChar(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified character
 is a combining character according to production 87
 of the XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a combining character,
         false otherwise.</dd></dl>
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<pre>public static&nbsp;boolean&nbsp;isXMLExtender(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 character is an extender according to production 88 of the XML 1.0
 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>String</code> true if it's an extender, false otherwise.</dd></dl>
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<h4>isXMLDigit</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLDigit(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 Unicode character
 is a digit according to production 88 of the XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML digit compliance</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a digit, false otherwise</dd></dl>
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<h4>isXMLWhitespace</h4>
<pre>public static&nbsp;boolean&nbsp;isXMLWhitespace(char&nbsp;c)</pre>
<div class="block">This is a utility function for determining whether a specified 
 Unicode character is a whitespace character according to production 3
 of the XML 1.0 specification.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>c</code> - <code>char</code> to check for XML whitespace compliance</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>boolean</code> true if it's a whitespace, false otherwise</dd></dl>
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