كيفية تعديل كود Xml من خلال كود جافا؟

السلام عليكم

لدى كود جافا فيه كومبو بوكس أريد عندما يختار المستخدم الرقم 2 ويضغط على الزر

يتم تغيير كود الكويرى سترنج فى ملف الاكس ام ال إلى

'week5' to'week8'

هذا هوا كود الجافا

import java.sql.*;
import net.sf.jasperreports.view.JasperViewer;
import net.sf.jasperreports.engine.xml.JRXmlLoader;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.JasperReport;
import java.io.OutputStream;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

 class ReportDriver {

public static void createAndShowGUI(){
Object[]obj={"1","2"};
JComboBox combo=new JComboBox(obj);
JFrame frame=new JFrame("Test");
JButton button=new JButton("Show Report");
frame.setLayout(new FlowLayout());
frame.setLocationRelativeTo(null);
frame.add(combo);
frame.add(button);
frame.setSize(150,100);
frame.setVisible(true);
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
show_report();	
}		
});
}

public static void show_report(){
try{
		 Class.forName("com.mysql.jdbc.Driver");
		 Connection c = DriverManager.getConnection("jdbc:mysql://localhost/library", "root", "");
	  }catch(Exception ex) {ex.printStackTrace();}



	  try{
		 JasperDesign jasperDesign = JRXmlLoader.load("F:\\Program Files\\Xinox Software\\JCreatorV4\\MyProjects\\chart2\\src\\report.xml");
		 JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
		 Connection c = DriverManager.getConnection("jdbc:mysql://localhost/library", "root", "");
		 JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, c);
		 JasperViewer.viewReport(jasperPrint);
	  }catch(Exception ex) {
		 String connectMsg = "Could not create the report " + ex.getMessage() + " " + ex.getLocalizedMessage();
		 System.out.println(connectMsg);
	  }	
}

   public static void main(String[] args) {
	createAndShowGUI();
   }
}

وهذا هو كود الاكس ام ال

<?xml version="1.0" encoding="UTF-8"  ?>
<!-- Created with iReport - A designer for JasperReports -->
<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport
		 name="test"
		 columnCount="1"
		 printOrder="Vertical"
		 orientation="Portrait"
		 pageWidth="595"
		 pageHeight="842"
		 columnWidth="535"
		 columnSpacing="0"
		 leftMargin="30"
		 rightMargin="30"
		 topMargin="20"
		 bottomMargin="20"
		 whenNoDataType="NoPages"
		 isTitleNewPage="false"
		 isSummaryNewPage="false">
	<property name="ireport.scriptlethandling" value="0" />
	<property name="ireport.encoding" value="UTF-8" />
	<import value="java.util.*" />
	<import value="net.sf.jasperreports.engine.*" />
	<import value="net.sf.jasperreports.engine.data.*" />

	<queryString><![CDATA[SELECT * FROM report WHERE category BETWEEN 'week1' AND 'week4']]></queryString>

	<field name="category" class="java.lang.String"/>
	<field name="values" class="java.lang.Integer"/>
	<field name="series" class="java.lang.String"/>

		<background>
			<band height="0"  isSplitAllowed="true" >
			</band>
		</background>
		<title>
			<band height="50"  isSplitAllowed="true" >
				<staticText>
					<reportElement
						x="158"
						y="7"
						width="183"
						height="37"
						key="staticText-1"/>
					<box></box>
					<textElement>
						<font size="14"/>
					</textElement>
				<text><![CDATA[			   Report]]></text>
				</staticText>
			</band>
		</title>
		<pageHeader>
			<band height="50"  isSplitAllowed="true" >
			</band>
		</pageHeader>
		<columnHeader>
			<band height="30"  isSplitAllowed="true" >
			</band>
		</columnHeader>
		<detail>
			<band height="4"  isSplitAllowed="true" >
			</band>
		</detail>
		<columnFooter>
			<band height="2"  isSplitAllowed="true" >
			</band>
		</columnFooter>
		<pageFooter>
			<band height="0"  isSplitAllowed="true" >
			</band>
		</pageFooter>
		<summary>
			<band height="194"  isSplitAllowed="true" >
				<stackedBar3DChart>
					<chart  hyperlinkTarget="Self" >
					<reportElement
						x="49"
						y="-6"
						width="369"
						height="200"
						key="element-1"/>
					<box></box>
						<chartLegend textColor="#000000" backgroundColor="#FFFFFF" >
					</chartLegend>
					</chart>
					<categoryDataset>
						<dataset >
						</dataset>
						<categorySeries>
							<seriesExpression><![CDATA[$F{series}]]></seriesExpression>
							<categoryExpression><![CDATA[$F{category}]]></categoryExpression>
							<valueExpression><![CDATA[$F{values}]]></valueExpression>
				<itemHyperlink >
				</itemHyperlink>
						</categorySeries>
					</categoryDataset>
					<bar3DPlot >
						<plot />
						<categoryAxisFormat>
							<axisFormat >
							</axisFormat>
						</categoryAxisFormat>
						<valueAxisFormat>
							<axisFormat >
							</axisFormat>
						</valueAxisFormat>
					</bar3DPlot>
				</stackedBar3DChart>
			</band>
		</summary>
</jasperReport>