passing values from java to subDataset of jasper report

<?xml version="1.0" encoding="UTF-8"?>

<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="example" language="groovy" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="fa59020a-3185-421b-bde5-da571f9082ca">

<property name="ireport.zoom" value="1.0"/>

<property name="ireport.x" value="0"/>

<property name="ireport.y" value="0"/>

<style name="table">

<box>

<pen lineWidth="1.0" lineColor="#000000"/>

</box>

</style>

<style name="table_TH" mode="Opaque" backcolor="#F0F8FF">

<box>

<pen lineWidth="0.5" lineColor="#000000"/>

</box>

</style>

<style name="table_CH" mode="Opaque" backcolor="#BFE1FF">

<box>

<pen lineWidth="0.5" lineColor="#000000"/>

</box>

</style>

<style name="table_TD" mode="Opaque" backcolor="#FFFFFF">

<box>

<pen lineWidth="0.5" lineColor="#000000"/>

</box>

</style>

<subDataset name="tableDataset" uuid="b5e1b805-4e23-48ae-837e-19835f2038cb">

<queryString language="MYSQL">

<![CDATA[SELECT ID,CITY FROM participant]]>

</queryString>

<field name="ID" class="java.lang.Integer"/>

<field name="CITY" class="java.lang.String"/>

<field name="STREET" class="java.lang.String"/>

<group name="CITY">

<groupExpression><![CDATA[$F{CITY}]]></groupExpression>

</group>

</subDataset>

<title>

<band height="58" splitType="Stretch">

<componentElement>

<reportElement key="table" style="table" x="0" y="0" width="299" height="46" uuid="48f85d24-beb7-4d1a-b823-4ea54b387a3e"/>

<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">

<datasetRun subDataset="tableDataset" uuid="d86e885a-a776-4dfa-8c24-346b8d74792f">

<connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>

</datasetRun>

<jr:column width="90" uuid="d88dc5bf-d0af-4f45-a25c-db3d829f6e30">

<jr:groupHeader groupName="CITY">

<jr:cell height="30" rowSpan="1">

<textField>

<reportElement x="0" y="0" width="90" height="30" uuid="96487c3f-a5df-4a1f-86fb-d7c89a46447b"/>

<textFieldExpression><![CDATA[$F{CITY}]]></textFieldExpression>

</textField>

</jr:cell>

</jr:groupHeader>

<jr:columnHeader style="table_CH" height="30" rowSpan="1">

<staticText>

<reportElement x="0" y="0" width="90" height="30" uuid="19d3236e-eadc-4890-9797-a587332211ef"/>

<text><![CDATA[Id]]></text>

</staticText>

</jr:columnHeader>

<jr:detailCell style="table_TD" height="20" rowSpan="1">

<textField>

<reportElement x="0" y="0" width="90" height="20" uuid="44a6fd0c-ac80-4e35-8677-08c79d3f46d8"/>

<textFieldExpression><![CDATA[$F{ID}]]></textFieldExpression>

</textField>

</jr:detailCell>

</jr:column>

<jr:column width="90" uuid="e1b974c8-1ccb-4a20-ba61-731e62a251db">

<jr:columnHeader style="table_CH" height="30" rowSpan="1">

<staticText>

<reportElement x="0" y="0" width="90" height="30" uuid="35dbcb35-a726-484e-b812-b70ec1df2abb"/>

<text><![CDATA[Street]]></text>

</staticText>

</jr:columnHeader>

<jr:detailCell style="table_TD" height="20" rowSpan="1">

<textField>

<reportElement x="0" y="0" width="90" height="20" uuid="d0e0abc9-4a74-4880-9e92-616896633890"/>

<textFieldExpression><![CDATA[$F{STREET}]]></textFieldExpression>

</textField>

</jr:detailCell>

</jr:column>

</jr:table>

</componentElement>

</band>

</title>

</jasperReport>

Now Please tell me, that how can i pass the values from the java class to the subDataset tag and also the corresponding code that has to be added to the datasetRun tag.