GWT java Numbercell Formatted

Question

I have here my Numbercells I want to add doubles to it e.g "1.20" but all I see is 1. How can I format them for the celltable?

    Column<dateiles, Number> column = new Column<dateiles, Number>(new NumberCell()) {
        @Override
        public Number getValue(dateiles object) {
            return object.sum;
        }
    };
    cellTable.addColumn(column, "Numbercells");

Answer 1

NumberFormat format = NumberFormat.getDecimalFormat().overrideFractionDigits(2);

Column<dateiles, Number> column = new Column<dateiles, Number>(new NumberCell(format)) {
    @Override
    public Number getValue(dateiles object) {
        return object.sum;
    }
};