Displaying data inside graphic element, ellipse

I have a business condition where I need to highlight a data (number value) value by drawing an ellipse around the data.

The logic is something like

if y < X
    Display data highlighted with an ellipse.
else
    Display data

Eg:

I'm using JRBeanCollectionDataSource as the data source and <jr:table> for formatting the report.

How can I print the value inside an ellipse?

<jr:detailCell style="table_TD" height="20" rowSpan="1">
    <textField>
        <reportElement mode="Transparent" x="0" y="0" width="250" height="19" isRemoveLineWhenBlank="true" uuid="a457d366-5e92-4588-be11-182d164a8db3">
            <printWhenExpression><![CDATA[!($F{country}.isEmpty())]]></printWhenExpression>
        </reportElement>
    </textField>
</jr:detailCell>