Using String for XML source

[Joannes Capitanio]

I'd like to generate xml string from a different source ( using directly some class instead of reading from a file and creating a String variable )...  my xml source doen't inclusde any reference to external source... so I tryed to open result using a StringReader... but a lot of exception come up when I compiled my class..  perhaps, systemID is always required...   Could someone help me?   thanks in advance