Dynamic tree structure (expand/collapse)

Question

i want to do one tree struc example (expand /collapse)
using xml;
like
WOrld
|
|
----INDIA
|
     -------Andhrapradesh
|
          |
-----------------Hyderabad
          |               |                         |           Visakhapatnam
          Karnataka
|
          |                    
Tamilnadu
America
|
Australia
in the frame at left side tree structure will be there ;when i click world hyperlink and at the right side one forum will come like this;
country name ---------
description ---------
when i enter america and enter submit;the country should come in the left frame;i will refresh left frame when click submit;ofcourse i know that;like wise when i click state hyperlink
state name ---------
description ---------
statename should come under state tree node;
i will also maintain this info in database also;i am using oracle9i;how can i do this the tree structure;how to approach;if anybody give me any links revelant to this?atleast give me some idea what to do?please dont give me the DOM tutorial or SAX Tutorial cos i already gone through but i didnt get any idea.
bye
chaitanya

Answer 1

Initailly set xerces.jar (parser, freeware download from apache site) to calss path
Suppose
<WORLD>
<INDIA>
<ANDHRA>abc</ANDHRA>
<VISHAKHA>fsdfd</VISHAKHA>
<UP>dss</UP>
</INDIA>
<USA>
<FLORIADA>bsbs</FLORIADA>
<NEWYORK>dsds</NEWYORK>
</USA>
</WORLD>
try{
dbf = DocumentBuilderFactory.newInstance();
db = dbf.newDocumentBuilder();
mapDocument = db.newDocument();
Element worldElement = mapDocument.createElement("WORLD");
Element indiaElement = mapDocument.createElement("INDIA");
Element andhraElement = mapDocument.createElement("ANDHRA");
andhraElement.appendChild(mapDocument.createTextNode("sdsd");
Element vishakhaElement = mapDocument.createElement("VISHKHA");
vishkhaElement.appendChild(mapDocument.createTextNode("sdfdf");
Element upElement = mapDocument.createElement("UP");
upElement.appendChild(mapDocument.createTextNode("fsfs");     
indiaElement.appendChild(andhraElement)
     .appendChild(vishkhaElement)
     .appendChild(upYElement)
//lly do for usaELement
//finally add indiaElemebnt and usaElement to worldElement                    
worldElement.appendChild(indiaElement)
     .appendChild(usaElement)
mapDocument.appendChild(worldElement);          
}catch(FactoryConfigurationError fce){
     fce.printStackTrace();
}catch(ParserConfigurationException pce){
pce.printStackTrace();
I think this u need