StAX and XML combined

[vishal1949]

I have this assignment where I have to make an xml that has movies names and info. Then i have to make a StAX program that locates the xml file and reads it. The program should also be able to count the number of movies in the decade. Thats the part that i cant code. I am totally blank. Can someone start me off or give me a hint.
my xml is

<!ELEMENT DVDS (DVD*) >
<!ELEMENT DVD (title, performers, release_year, discs, price) >
<!ATTLIST DVD id CDATA #REQUIRED>
<!ELEMENT title (#PCDATA)>
<!ELEMENT performers (performer*)>
<!ELEMENT performer (#PCDATA)>
<!ELEMENT release_year (#PCDATA)>
<!ELEMENT discs (#PCDATA)>
<!ELEMENT price (#PCDATA)>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE DVDS SYSTEM "dvd.dtd">
<DVDS>
  <DVD id="1">
   <title>Witness</title>
   <performers> 
    <performer>Harrison  Ford</performer>
    <performer>Kelly  McGillis</performer>
   </performers>
   <release_year>1980</release_year>//I couldn't find the movie
   <discs>1</discs>
   <price>7.99</price>
  </DVD>
  <DVD id="2">
   <title>Star Wars Episode V - The  Empire Strikes Back</title>
   <performers>
    <performer>Mark  Hamill</performer>
    <performer>Harrison  Ford</performer>
    <performer>Carrie  Fisher</performer>
   </performers>
   <release_year>1980</release_year>
   <discs>2</discs>
   <price>14.95</price>
 <DVD id="3">
   <title>Harold and Kumar 3D Christmas</title>
   <performers> 
   </performers>
   <release_year>2011</release_year>
   <discs>3</discs>
   <price>19.99</price>
  </DVD>
</DVDS>

and my StAX is

package staxdvdreader;
import javax.xml.stream.*;
import java.io.*;
import java.util.*; 

public class StaxDVDReader {
 public void read(String  filepath) {
 try {
  FileInputStream fileInputStream = new  FileInputStream(filepath);
       XMLInputFactory factory = XMLInputFactory.newInstance();
       XMLStreamReader xmlStreamReader = 
           factory.createXMLStreamReader(fileInputStream);
  while (xmlStreamReader.hasNext()) {
   readDVDList(xmlStreamReader);
  }
  xmlStreamReader.close();
  } catch  (XMLStreamException e) {
       e.printStackTrace(); 
  } catch  (FileNotFoundException e) {
       e.printStackTrace(); 
  }
 }
 private void  readDVDList(XMLStreamReader reader) throws XMLStreamException {
 int eventCode =  reader.next(); 
 switch (eventCode) {
  case XMLStreamReader.START_ELEMENT:
       String key = reader.getLocalName();
       if (key.equals("DVD")) {
            readDVD(reader);
       }
   break;
  }
 }
  
 private void  readDVD(XMLStreamReader reader) 
       throws XMLStreamException {
 String name = "";
 String value = "";
 
 int nAttributes =  reader.getAttributeCount();
 String avalue =  reader.getAttributeValue(0);
 System.out.println("attribute  value: " + avalue + " attribute count: " + nAttributes);
 
 while (reader.hasNext()) {
  int eventCode = reader.next();
       switch (eventCode) {
       case XMLStreamReader.START_ELEMENT:
            name =  reader.getLocalName();
            break;
       case XMLStreamReader.END_ELEMENT:
            name =  reader.getLocalName();
            if (name.equals("DVD"))  return;  
            break;
       case XMLStreamReader.CHARACTERS:
        value =  reader.getText();
            System.out.println("Element  name= " + name + " value=" + value);
            break;
       }
 }
 return;
 }
 public static void decadeCount(){//right over here
 }
 
 public static void  main(String[] args) {
 StaxDVDReader dvdReader =  new StaxDVDReader();
 dvdReader.read("C:\\dvd.xml");
 }
}