How can I edit an xml file using java api in Matlab ?

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dblx
dblx 2015-1-21
Hi,
I would like to replace text in an xml file using the org.w3c.dom package in Matlab, specifically the text between help_location
Here is the xml file :
<productinfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="optional">
<?xml-stylesheet type="text/xsl"href="optional"?>
<matlabrelease>2013b</matlabrelease>
<name>Library</name>
<type>other</type>
<icon></icon>
<help_location>C:\Users\user\Desktop\Library/html</help_location>
<help_contents_icon>$toolbox/matlab/icons/bookicon.gif</help_contents_icon>
</productinfo>
and the extract from the m file :
function lib_help_Callback(hObject, eventdata, handles)
% hObject handle to lib_help (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
pwd;
currentfolder = pwd;
xDoc = xmlread(fullfile(('info.xml')));
allListItems = xDoc.getElementsByTagName('productinfo');
allListItems = allListItems.item(0);
thisListItem=allListItems.getElementsByTagName('help_location');
thisListItem=thisListItem.item(0);
textNode = thisListItem.childNodes(0);
textNode.replaceWholeText(currentfolder);
builddocsearchdb(currentfolder);
doc;
do I have to use xmlwrite to overwrite the info.xml file afterwards ? If so please specify how.
Thanks in advance.

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