hange the font color of a row in a table conditionally

Hi, can anyone please help me with this following problem.
I want to change the font color of a row in a table to red whenever some condition is satisfied.
How can i do that?
Please help ASAP.

There are many post on this topic on forum, eg.
setCellStyleGenerator - specific style according to cell value

Thankyou. It worked fine.
table.setCellStyleGenerator(new Table.CellStyleGenerator() {
private static final long serialVersionUID = 1L;

                public String getStyle(Table source, Object itemId,
                        Object propertyId) {
                    // TODO Auto-generated method stub
                    if (propertyId == null) {
                        // Styling for row
                        Item item = table.getItem(itemId);
                        String reason = (String) item.getItemProperty(
                        if (reason.endsWith("Invalid")) {
                            return "highlight-darkred";
                        } else {
                            return null;
                    } else {
                        // styling for column propertyId
                        return null;