question: public void characters ( char [ ] ch , int start , int length ) throws SAXException { try { stopTerminator ( ) ; if ( w == null ) return ; int end = start + length ; for ( int i = start ; i < end ; i ++ ) { char c = ch [ i ] ; switch ( c ) { case '&' : w . write ( "&amp;" ) ; break ; case '<' : w . write ( "&lt;" ) ; break ; case '>' : w . write ( "&gt;" ) ; break ; case '\n' : case '\r' : case '\t' : w . write ( c ) ; break ; default : if ( canEncode ( c ) ) { w . write ( c ) ; } else { w . write ( "&#" ) ; w . write ( Integer . toString ( c ) ) ; w . write ( ";" ) ; } break ; } } } catch ( IOException e ) { throw new SAXException ( e ) ; } }
target:  Inserts a string of characters into the document.