xml - Can we change the XML namespace variable name in JDOM?

Question

I've an XML:

<OTC_RM xmlns="OTC_RM_11-0" xmlns:ns2="http://www.fpml.org/2010/FpML-4-9">

I wish to change the namespace variable name from ns2 to something else say fp using JDOM. And the change should reflect all across the XML document.

Is it possible?