好东西啊！你看看就知道了

				/**				 * A simple Data class for storing character content.				 *				 * $Log: Data.java,v $				 * Revision 1.13  1999/05/04 15:23:00  lehors				 * commit after CVS crash				 *				 * Revision 1.6  1999/05/04 14:52:43  jsaarela				 * Literal value now tells if it is well-formed XML.				 * Improved entity management in Data nodes.				 *				 * Revision 1.5  1998/10/09 17:26:55  jsaarela				 * Parser conformance to RDF Model&Syntax dated 19981008				 *				 * Revision 1.4  1998/09/08 15:54:00  jsaarela				 * Distribution release V1.4 - aboutEachPrefix added, namespace management				 * improved.				 *				 * Revision 1.3  1998/08/12 07:54:14  jsaarela				 * Namespace management now corresponds with the W3C Working				 * Draft dated 2-Aug-98.				 *				 * Revision 1.2  1998/07/27 12:20:48  jsaarela				 * 1st distribution version logged in.				 *				 *				 * @author Janne Saarela				 */				package org.w3c.rdf.implementation.syntax.sirpac;								import java.io.PrintStream;				import org.xml.sax.SAXException;								public class Data extends Element {				    private String	m_sContent = null;				    private boolean	m_bXML = false;								    public Data (String sContent) /*throws SAXException*/ {					super ("[DATA: "+sContent+"]", null);					m_sContent = sContent;				    }				    				    public Data (String sContent, boolean bXML) /*throws SAXException*/ {					super ("[DATA: "+sContent+"]", null);					m_sContent = sContent;					m_bXML = bXML;				    }				    				    public String	data () {					return m_sContent;				    }								    public void		set (String sData) {					m_sContent = sData;				    }								    public boolean	isXML () {					return m_bXML;				    }								    public void		linearize (int indent, PrintStream ps) {					for (int x = 0; x < indent; x++) {					    ps.print (" ");					}					System.out.println ("Content: "+m_sContent);				    }				}