The Verifier Class

package org.jdom;

public final class Verifier {

    public static final String checkElementName(String name) {}
    public static final String checkAttributeName(String name) {}
    public static final String checkCharacterData(String text) {}
    public static final String checkNamespacePrefix(String prefix) {}
    public static final String checkNamespaceURI(String uri) {}
    public static final String checkProcessingInstructionTarget(String target) {}
    public static final String checkCommentData(String data) {}
 
    public static boolean isXMLCharacter(char c) {}
    public static boolean isXMLNameCharacter(char c) {}
    public static boolean isXMLNameStartCharacter(char c) {}
    public static boolean isXMLLetterOrDigit(char c) {}
    public static boolean isXMLLetter(char c) {}
    public static boolean isXMLCombiningChar(char c) {}
    public static boolean isXMLExtender(char c) {}
    public static boolean isXMLDigit(char c) {}

    public static final String checkNamespaceCollision(
     Namespace namespace, Namespace other) {}
    public static final String checkNamespaceCollision(
     Attribute attribute, Namespace other) {}
    public static final String checkNamespaceCollision(
     Namespace namespace, Element element) {}
    public static final String checkNamespaceCollision(
     Namespace namespace, Attribute attribute) {}
    public static final String checkNamespaceCollision(
     Namespace namespace, List list) {}

}