final String SHEET_NAME = "XMLExporter_SheetTestName";
try {
oObj = (XInterface) xMSF.createInstanceWithArguments(
"com.sun.star.comp.Calc.XMLExporter", new Object[] {arg} );
XExporter xEx = (XExporter) UnoRuntime.queryInterface
(XExporter.class,oObj);
xEx.setSourceDocument(xSheetDoc);
//set name of sheet
XSpreadsheetDocument xSpreadsheetDoc = (XSpreadsheetDocument)
UnoRuntime.queryInterface(XSpreadsheetDocument.class, xSheetDoc);
XSpreadsheets xSpreadsheets = xSpreadsheetDoc.getSheets();