While creating chart from java bean i am gettting error ---------------------------------------------------------------------------------------- Error ---------------------------------------------------------------------------------------- net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : subjectNameat net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:123)at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96)at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:100)at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:1330)at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1231)at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1207)at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1544)at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:142)at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:909)at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:841)at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:88)at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:653)at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:569)at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:915)at ReportUtil.createReport(ReportUtil.java:33)at ReportUtil.createReport(ReportUtil.java:51)at Test.main(Test.java:18)Caused by: java.lang.NoSuchMethodException: Unknown property 'subjectName'at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1122)at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290)at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111)... 16 more----------------------------------------------------------------------------------------Java code----------------------------------------------------------------------------------------public class JasperReportFill { public static void main(String[] args) {String sourceFileName = "D:/RetailApp/JasperFiles/spider.jasper"; DataBeanList DataBeanList = new DataBeanList();ArrayList<DataBean> dataList = DataBeanList.getDataBeanList(); JRBeanCollectionDataSource beanColDataSource = new JRBeanCollectionDataSource(dataList); Map parameters = new HashMap(); try { createReport(parameters, dataList);JasperFillManager.fillReportToFile(sourceFileName, parameters,beanColDataSource);} catch (JRException e) {e.printStackTrace();}} public static void createReport(Map parameters, Collection data) {String jasperFileName = "spider.jasper";String pdfFileName = "Rep";String jasperFullPath = "D:/RetailApp/JasperFiles/" + jasperFileName;String pdfDir = "D:/RetailApp/PDF/"; File pdfPath = new File(pdfDir);pdfPath.mkdirs(); File pdfFile = new File(pdfPath, pdfFileName);String pdfFullPath = pdfFile.getAbsolutePath();System.out.println(jasperFullPath);try {JRPdfExporter pdfExporter = new JRPdfExporter();JasperPrint jasperPrint = null;JRDataSource dataSource = new JRBeanCollectionDataSource(data);jasperPrint = JasperFillManager.fillReport(jasperFullPath,parameters, dataSource); pdfExporter = new JRPdfExporter();pdfExporter.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);pdfExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,pdfFullPath);pdfExporter.exportReport(); } catch (Exception e) {e.printStackTrace();} }} ------------------------------------------------------------------------------------------------DataBean class------------------------------------------------------------------------------------------------public class DataBeanList { public ArrayList getDataBeanList() { ArrayList dataBeanList = new ArrayList(); dataBeanList.add(produce("English", 58)); dataBeanList.add(produce("SocialStudies", 68)); dataBeanList.add(produce("Maths", 38)); dataBeanList.add(produce("Hindi", 88)); dataBeanList.add(produce("Scince", 78)); return dataBeanList; } /* * This method returns a DataBean object, with subjectName , * and marks set in it. */ private DataBean produce(String subjectName, Integer marks) { DataBean dataBean = new DataBean(); dataBean.setSubjectName(subjectName); dataBean.setMarks(marks); return dataBean; }}----------------------------------------------------------------------------------------------------POJO_________________________________________________________public class DataBean { public String subjectName; public Integer marks; public String getSubjectName() { return subjectName; } public void setSubjectName(String subjectName) { this.subjectName = subjectName; } public Integer getMarks() { return marks; } public void setMarks(Integer marks) { this.marks = marks; } }----------------------------------------------------------------------------------------------------JRXML----------------------------------------------------------------------------------------------------<?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="spider" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="1e6a951a-42b2-4a58-a471-bc6b0aa60e96"><property name="ireport.zoom" value="1.0"/><property name="ireport.x" value="0"/><property name="ireport.y" value="0"/><field name="subjectName" class="java.lang.String"/><field name="marks" class="java.lang.Number"/><background><band splitType="Stretch"/></background><title><band height="79" splitType="Stretch"/></title><pageHeader><band height="35" splitType="Stretch"/></pageHeader><columnHeader><band height="61" splitType="Stretch"/></columnHeader><detail><band height="204" splitType="Stretch"><barChart><chart><reportElement x="57" y="64" width="200" height="100" uuid="94df4b9b-1fb1-4360-9db9-9ab4a7d106fc"/><chartTitle/><chartSubtitle/><chartLegend/></chart><categoryDataset><categorySeries><seriesExpression><![CDATA[$F{subjectName}]]></seriesExpression><categoryExpression><![CDATA[$F{subjectName}]]></categoryExpression><valueExpression><![CDATA[$F{marks}]]></valueExpression></categorySeries></categoryDataset><barPlot><plot/><itemLabel/><categoryAxisFormat><axisFormat/></categoryAxisFormat><valueAxisFormat><axisFormat/></valueAxisFormat></barPlot></barChart></band></detail><columnFooter><band height="45" splitType="Stretch"/></columnFooter><pageFooter><band height="54" splitType="Stretch"/></pageFooter><summary><band height="42" splitType="Stretch"/></summary></jasperReport>
