JasperReports no working sample

Question

I've couldn't find a working sample with Jasper Reports
The sample in the jaspers projects site are not what i've expected to find.
I need somethig like a Hello Report. Or even better a report to a query from a database.
I've tried some guidelines from googling but still have this execptions:
net.sf.jasperreports.engine.JRException: Error compiling report java source files : E:\workspace\JasperReport\Simple_Report_1198053556890_895855.java
     at net.sf.jasperreports.engine.design.JRJavacCompiler.compileClasses(JRJavacCompiler.java:93)
     at net.sf.jasperreports.engine.design.JRAbstractClassCompiler.compileUnits(JRAbstractClassCompiler.java:67)
     at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:190)
     at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:220)
     at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:153)
     at JasperReportsIntro.main(JasperReportsIntro.java:20)
Caused by: java.io.IOException: Cannot run program "javac": CreateProcess error=2, The system cannot find the file specified
     at java.lang.ProcessBuilder.start(Unknown Source)
     at java.lang.Runtime.exec(Unknown Source)
     at java.lang.Runtime.exec(Unknown Source)
     at net.sf.jasperreports.engine.design.JRJavacCompiler.compileClasses(JRJavacCompiler.java:62)
     ... 5 more
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
     at java.lang.ProcessImpl.create(Native Method)
     at java.lang.ProcessImpl.<init>(Unknown Source)
     at java.lang.ProcessImpl.start(Unknown Source)
     ... 9 more
http://www.ensode.net/jasperreports_intro.html

Answer 1

this is the jrxml file
<?xml version="1.0"?>
<!DOCTYPE jasperReport
PUBLIC "-//JasperReports//DTD Report Design//EN"
"http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport name="Simple_Report">
<detail>
<band height="20">
<staticText>
<reportElement x="180" y="0" width="200" height="20"/>
<text><![CDATA[Hello World!]]></text>
</staticText>
</band>
</detail>
</jasperReport>
this is my source code
import java.util.HashMap;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
public class JasperReportsIntro
public static void main(String[] args)
JasperReport jasperReport;
JasperPrint jasperPrint;
try
jasperReport = JasperCompileManager.compileReport("basicreport.jrxml");
jasperPrint = JasperFillManager.fillReport(jasperReport, new HashMap(), new JREmptyDataSource());
JasperExportManager.exportReportToPdfFile(jasperPrint,"simple_report.pdf");
catch (JRException e)
e.printStackTrace();
}