public class SAXSearch{

public static void main(String[] args) {

if(args.length!=1){

System.err.println("usage: java SAXSearch publisher");

return;

}

try{

XMLReader xmlr = XMLReaderFactory.createXMLReader();

Handler handler = new Handler();

xmlr.setContentHandler(handler);

xmlr.setErrorHandler(handler);

xmlr.setProperty("http://xml.org/sax/properties/lexical-handler", handler);

xmlr.parse(new InputSource(new FileReader("books.xml")));

}catch(IOException ioe){

ioe.printStackTrace();

}catch(SAXException saxe){

saxe.printStackTrace();

}

}

}

public class Handler extends DefaultHandler2{

private boolean isPublisher, isTitle;

private String isbn, publisher, pubYear, title, srchText;

public Handler(String srchText){

this.srchText = srchText;

}

@Override

public void character(){char[] ch, int start, int length}{

if(isTitle){

title = new String(ch, start, length).trim();

isTitle = false;

}else if(isPublisher){

publisher = new String(ch, start, length).trim();

isPublisher = false;

}

}

@Override

public void endElement(String uri, String localName, String qName){

if(!localName.equals("book") || !srchText.equals(publisher)){

return;

}

System.out.println("title = " + title + ", isbn = " + isbn);

}

@Override

public void error(SAXParseException saxpe){

saxpe.printStackTrace();

}

@Override

public void fatalError(SAXParseException saxpe){

saxpe.printStackTrace();

}

@Override

public void startElement(String uri, String localName, String qName, Attributes attributes){

if(localName.equals("title")){

isTitle = true;

return;

}else if(localName.equals("publisher")){

isPublisher = true;

return;

}

if(!localName.equals("book")){

return;

}

for(int i=0; i<attributes.getLength();i++){

if(attributes.getLocalName(i).equals("isbn")){

isbn = attributes.getValue(i);

}else if(attributes.getLocalName().equals("pubyear")){

pubYear = attributes.getValue(i);

}

}

}

@Override

public void warning(SAXParseException saxpe){

System.out.println("warning() " + saxpe);

}

}