try {
    XCellRange range = xSpreadSheet_.getCellRangeByPosition(0,1,17,1);
    XPropertySet xPropSet = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, range);
    xPropSet.setPropertyValue("CharWeight", new Double(FontWeight.BOLD));
    xPropSet.setPropertyValue("CellBackColor", new Integer(0xAAAAAA));
    xPropSet.setPropertyValue("HoriJustify",  CellHoriJustify.LEFT);
						
    XColumnRowRange xColRange = (XColumnRowRange)UnoRuntime.queryInterface(XColumnRowRange.class,range);
    XEnumerationAccess xEnumAccess = (XEnumerationAccess)UnoRuntime.queryInterface(XEnumerationAccess.class,xColRange.getColumns());
    XEnumeration xEnum = xEnumAccess.createEnumeration();
			
    Object tableColumnService;
			
    while( xEnum.hasMoreElements() ) {
        tableColumnService = xEnum.nextElement();
        xPropSet = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, tableColumnService);
        xPropSet.setPropertyValue("OptimalWidth",new Boolean(true));
    }
} catch( Exception e) {
    e.printStackTrace();
}