Why an empty report is being created in Jasper Reports - jasper-reports

Question

I am new to Jasper Reports , cpuld anybody please tell me why an empty Report is being created inspite of data being resent in Database
please see this is my program
public class ReportDriver {
/**
* Constructor for ReportDriver
*/
public ReportDriver() {
}
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection(
"jdbc:oracle:thin:#localhost:1521:orcle", "scott", "tiger");
JasperDesign jasperDesign = JRXmlLoader
.load("C:\\Documents and Settings\\Admin\\report5.jrxml");
JasperReport jasperReport = JasperCompileManager
.compileReport(jasperDesign);
JasperPrint jasperPrint = JasperFillManager.fillReport(
jasperReport, null, con);
JasperViewer.viewReport(jasperPrint);
} catch (Exception ex) {
ex.printStackTrace();
String connectMsg = "Could not create the report ";
System.out.println(connectMsg);
}
}
}
This is my jrxml file
<?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="report5" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<queryString language="SQL">
<![CDATA[select EMPNO , ENAME , JOB from emp]]>
</queryString>
<field name="EMPNO" class="java.math.BigDecimal"/>
<field name="ENAME" class="java.lang.String"/>
<field name="JOB" class="java.lang.String"/>
<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"/>
</detail>
<columnFooter>
<band height="45" splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band height="54" splitType="Stretch"/>
</pageFooter>
<summary>
<band height="42" splitType="Stretch"/>
</summary>
</jasperReport>

Answer 1

Your report is empty because that's exactly how it should be: Your jrxml does not include any elements to display. Try the following jrxml and see the difference:
<?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="report5" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<queryString language="SQL">
<![CDATA[select EMPNO , ENAME , JOB from emp]]>
</queryString>
<field name="EMPNO" class="java.math.BigDecimal"/>
<field name="ENAME" class="java.lang.String"/>
<field name="JOB" class="java.lang.String"/>
<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 x="0" y="0" width="100" height="20"/>
<textElement/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{EMPNO}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="20" width="100" height="20"/>
<textElement/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{ENAME}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="40" width="100" height="20"/>
<textElement/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{JOB}]]></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>