Java/xml/hashtable-part 2

Question

Hi, I'm back. I had a question a few days ago using JDOM to read and write XML files with Java, and then creating a hashtable. Someone replied and helped considerably, but as a beginner programmer, I still have a few problems. My XML document is HUGE, with a huge tree and the key and values that i am trying to extract are children of different elements of the tree. Mainly, I am having problems navigating through a tree. Let's say the following is my XML file (mine is much bigger than this but similar problem), and i want the key of the hashtable to be city and the value to be zipcode.
<?xml version="1.0" ?>
- <person>
- <name>
<firstname>Joe</firstname>
<lastname>Stevenson</lastname>
</name>
- <homeinfo>
<address street="12345 Jones Lane Avenue" city="Lyndburg" state="Utah" zip="32423" />
</homeinfo>
<phone>345-098-2342</phone>
<email>[email protected]</email>
<occupation>Secretary</occupation>
- <workinfo>
<workname>Senior Citizen's Association</workname>
<address street="233 Great Street" city="Baltimore" state="Maryland" zip="23421" />
</workinfo>
</person>
So the output i would like to see is: {Lyndburg= 32423, Baltimore=23421}
Any help would be wonderful! thanks so much!

Answer 1

As I just wrote, next time please paste your code between code tags exactly like this:
&#91;code&#93;
your code
&#91;/code&#93;
You may read the [url http://forum.java.sun.com/faq.jsp#format]formatting help for more information.
Thank you
I don't know what happened, maybe you didn't copy/paste my code, or made some changes that broke the code. Here is the corrected version of the code you posted:
import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.input.*;
import org.jdom.filter.*;
public class InfoMap {
    public static void main(String[] args) throws Exception {
        new InfoMap().test();
    void test() throws Exception {
        Map map = new HashMap();
        File f = new File("person.xml");
        Document doc = new SAXBuilder().build(f);
        Iterator iterator = doc.getDescendants(new Filter() {
            public boolean matches(Object obj) {
                if ((obj instanceof Element) && ((Element)obj).getName().equals("person"))
                    return true;
                else
                    return false;
            } // <-- this was missing
        while (iterator.hasNext()) {
            Element person = (Element)iterator.next();
            Element homeinfo = person.getChild("homeinfo");
            Element address = homeinfo.getChild("address");
            Attribute city = address.getAttribute("city");
            Attribute zip = address.getAttribute("zip");
            map.put(city.getValue(), zip.getValue());
            Element workinfo = person.getChild("workinfo");
            address = workinfo.getChild("address");
            city = address.getAttribute("city");
            zip = address.getAttribute("zip");
            map.put(city.getValue(), zip.getValue());
        System.out.println(map);
    } // <-- this was missing
} // <-- this was missing