Dynamicaly pass data fro a java object to jasper report and convert to PDF - jasper-reports

Question

I am new in Jasper/ I report. I am trying to create a report that access or gets its data from the java class. I have been trying to use JRBeanDataSource with no luck. I want the report to be dynamic in code without using i-report. I tried designing a report from i report but i cant seem to make the report compile. here is the error
 Compiling to file... E:\Program Files (x86)\Jaspersoft\iReport-5.0.1\ireport\projects\report1.jasper
net.sf.jasperreports.engine.design.JRValidationException: Report design not valid :       1. Parameter not found : name      2. Parameter not found : surname     at net.sf.jasperreports.engine.design.JRAbstractCompiler.verifyDesign(JRAbstractCompiler.java:271)     at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:153)     at net.sf.jasperreports.engine.JasperCompileManager.compile(JasperCompileManager.java:240)     at net.sf.jasperreports.engine.JasperCompileManager.compileToFile(JasperCompileManager.java:156)     at net.sf.jasperreports.engine.JasperCompileManager.compileReportToFile(JasperCompileManager.java:439)     at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:528)     at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)     at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)
Compilation running time: 60!
The report XML is
<?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="report1" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" whenResourceMissingType="Empty" uuid="a686c2f8-36e1-48f1-8894-8324c9f5d041">
<property name="ireport.zoom" value="1.4641000000000006"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="24"/>
<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="125" splitType="Stretch">
<textField>
<reportElement uuid="b1370c0a-6fd1-44ec-af9a-f4edba088c48" x="97" y="21" width="100" height="20"/>
<textElement/>
<textFieldExpression><![CDATA[$P{name}]]></textFieldExpression>
</textField>
<textField>
<reportElement uuid="06c14f56-9416-4d14-a6d3-7f5dbfa6d701" x="97" y="59" width="100" height="20"/>
<textElement/>
<textFieldExpression><![CDATA[$P{surname}]]></textFieldExpression>
</textField>
</band>
</detail>
<columnFooter>
<band height="45" splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band height="54" splitType="Stretch"/>
</pageFooter>
<summary>
<band height="42" splitType="Stretch"/>
</summary>
</jasperReport>
can some one help with this?

Answer 1

You refer in the report to 2 parameter expressions: $P{name}, $P{surname}.
These have not been defined.
In order to make your report executable you'd need to add definitions for these parameters, e.g.
..
<property name="ireport.y" value="24"/>
<parameter name="name" class="java.lang.String" />
<parameter name="surname" class="java.lang.String" />
<background>
..
If name and surname shall not be filled by parameters but by your datasource you'd need to register them as fields and refer to them as such.
..
<property name="ireport.y" value="24"/>
<field name="name" class="java.lang.String" />
<field name="surname" class="java.lang.String" />
<background>
..
in the text fields you refer to them as $F{name}, $F{surname}