JasperReports: How to pass parameter to subReport

Try using iReport if you are not.

When viewing a report within iReport you can select the properties of the subreport within the main report.

In this there is an option in Subreport properties called Parameters. Using this you can pass parameters to your subreport.

• Select this and click the Add
  button.

• Then click the button right of the
  Value expression Box

• Next an option screen will pop up
  where you can select the parameter
  from the master report you want to
  pass.

If you want to do it via xml here’s a quick example.

<subreport>
    <subreportParameter name="XML_ID">
        <subreportParameterExpression>
            <![CDATA[$P{MASTER_REPORT_PARAMETER}]]></subreportParameterExpression>
    </subreportParameter>
</subreport>