XML -> DOM Tree -> XML

Hi all!

Sorry if this is the wrong list to send this message , but i stuck. So i 
write a Java application that parses an XML file creates a DOM tree do 
something on the tree and write to an other XML file. But my problem is 
that the output XML file does not look like the input XML file. What do 
i mean?

This is the input:

<?xml version="1.0"?>
<root>
        <a>
                1
        </a>
        <a>
                2
        </a>
        <a>

                3
        </a>
</root>

This is the output:

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <a>                 1         </a>
    <a>                 2         </a>
    <a>                 3         </a>
</root>

This case i did not touch the tree just read and parse the original XML 
document, and create an output from it.
Is it possible to keep the format of the original XML document??? (i 
mean that with whitspaces,line breaks, etc.)
What causes it ? The parser or the serializer?
I think the serializer but not sure.

Thank you for your help.

Csaba Bistey



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