This class extends org.xml.sax.helpers.DefaultHandler to add no-op methods that implement the LexicalHandler, DeclHandler, and EntityResolver2 methods. It overrides the two-argument version of resolveEntity from the core EntityResolver interface to invoke the four-argument version from the EntityResolver2 interface.

Figure 22-9. org.xml.sax.ext.DefaultHandler2

public class DefaultHandler2 extends org.xml.sax.helpers.DefaultHandler
 implements DeclHandler, EntityResolver2, LexicalHandler {
// Public Constructors
     public DefaultHandler2( );  
// Methods Implementing DeclHandler
     public void attributeDecl(String eName, String aName, String type, 
        String mode, String value) 
        throws org.xml.sax.SAXException;     emDpty
     public void elementDecl(String name, String model) 
        throws org.xml.sax.SAXException;     empty
     public void externalEntityDecl(String name, String publicId, String systemId) 
        throws org.xml.sax.SAXException;     empty
     public void internalEntityDecl(String name, String value) 
        throws org.xml.sax.SAXException;     empty
// Methods Implementing EntityResolver
     public org.xml.sax.InputSource resolveEntity(String publicId, String systemId) 
        throws org.xml.sax.SAXException, java.io.IOException;  
// Methods Implementing EntityResolver2
     public org.xml.sax.InputSource getExternalSubset(String name, String baseURI) 
        throws org.xml.sax.SAXException, java.io.IOException;     constant
     public org.xml.sax.InputSource resolveEntity(String name, String publicId, 
        String baseURI, String systemId) 
        throws org.xml.sax.SAXException, 
        java.io.IOException;     constant
// Methods Implementing LexicalHandler
     public void comment(char[ ] ch, int start, int length) 
        throws org.xml.sax.SAXException;     empty
     public void endCDATA( ) throws org.xml.sax.SAXException;             empty
     public void endDTD( ) throws org.xml.sax.SAXException;               empty
     public void endEntity(String name) throws org.xml.sax.SAXException;     empty
     public void startCDATA( ) throws org.xml.sax.SAXException;           empty
     public void startDTD(String name, String publicId, String systemId) 
        throws org.xml.sax.SAXException;     empty
     public void startEntity(String name) throws org.xml.sax.SAXException;     empty
}