XML to JSON convertion loose some XML tags

Question

I'm converting a XML string to JSONObject using following method:

XMLSerializer xml = new XMLSerializer();
JSONObject json = (JSONObject) xml.read(input);

but after the conversion happened some tags are not included in JSONObject. missing tags are exactly the same tags that included in JSONObject the only difference is attributes inside the tags are different. can someone tell me what is happening with the conversion.

here are the tag that includes in JSON

<entry urlName="Dir"
utf8Name="Dir"
type="directory"
changeTimeMilliseconds="1373284160872.00"
changeTimeString="2013-07-08T17:19:20+0530"
state="created"/>

and this is the tag skip from convertion

<entry urlName="c_samples.zip"
utf8Name="c_samples.zip"
type="object"
size="453"
hashScheme="SHA-256"
hash="9AAA2B203F75ED679F133C1A26BA9BB04CF12466DF0670DEC3CD587ED5FF0A27"
retention="1438317494"
retentionString="7/31/2015 10:08AM"
retentionClass=""
ingestTime="1375244240"
ingestTimeString="7/31/2013 9:47AM"
hold="false"
shred="true"
dpl="1"
index="false"
customMetadata="true"
customMetadataAnnotations="default;453"
version="88015631368193"
replicated="false"
changeTimeMilliseconds="1375260472887.00"
changeTimeString="2013-07-31T14:17:52+0530" 
owner="owner"
domain=""
hasAcl="false"
state="created"/>

Answer 1

found a solution from changing converting method. earlier I used net.sf.json.JSONObject to create the JSONObject and net.sf.json.xml.XMLSerializer to do the convertion. I switched to org.json.JSONObject and org.json.XML and used

JSONObject json = XML.toJSONObject(input);

method. it gave me the complete set of tags I want to convert. :)