Compare 2 XML iles

Hi,
Can any one have the sample code to compare the 2 XML file and create the delta XML file in java?
My situation is i have 2 XML files one is the previous XML file and new file. I need to compare the 2 files and need to create a new delta XML file.

Thanks
Deep

The following posts might help
Java APIs for Text file comparison (Java in General forum at JavaRanch)

If you are on unix/linux, it has some standard command line tools you can use to do file comparison (eg diff)