JasperReport help

Question

He all... i have a problem with jasperReport tool
i must make a pdf from a model, and i must insert data from my application...
i choose iReport for make this work... but i found a lot of problems
my code is:
import java.util.HashMap;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperCompileManager;
public class Application
public static void main(String[] args)
     Logger log = Logger.getLogger(Application.class);
     BasicConfigurator.configure();
     try
     System.out.println("Compiling report...");
     JasperCompileManager.compileReportToFile("c:/a/reports/FirstReport.jrxml");
     System.out.println("Done!");
     catch (JRException e)
     e.printStackTrace();
try
System.out.println("Filling report...");
JasperFillManager.fillReportToFile("c:/a/reports/FirstReport.jasper",
new HashMap(), new JREmptyDataSource());
System.out.println("Done!");
catch (JRException e)
e.printStackTrace();
and the error is:
import java.util.HashMap;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperCompileManager;
public class Application
public static void main(String[] args)
     Logger log = Logger.getLogger(Application.class);
     BasicConfigurator.configure();
     try
     System.out.println("Compiling report...");
     JasperCompileManager.compileReportToFile("c:/a/reports/FirstReport.jrxml");
     System.out.println("Done!");
     catch (JRException e)
     e.printStackTrace();
try
System.out.println("Filling report...");
JasperFillManager.fillReportToFile("c:/a/reports/FirstReport.jasper",
new HashMap(), new JREmptyDataSource());
System.out.println("Done!");
catch (JRException e)
e.printStackTrace();
can anyone help me? thanks a lot!

Answer 1

i'm sorry... i copy wrong code...
the error is this...
Exception in thread "main" org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException
     at org.apache.commons.logging.LogFactory.newFactory(LogFactory.java:558)
     at org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:355)
     at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:409)
     at org.apache.commons.digester.Digester.<init>(Digester.java:304)
     at net.sf.jasperreports.engine.xml.JRXmlDigester.<init>(JRXmlDigester.java:62)
     at net.sf.jasperreports.engine.xml.JRXmlDigesterFactory.createDigester(JRXmlDigesterFactory.java:975)
     at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:203)
     at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:168)
     at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:152)
     at net.sf.jasperreports.engine.JasperCompileManager.compileReportToFile(JasperCompileManager.java:90)
     at pdf.Application.main(Application.java:15)
Caused by: java.lang.NullPointerException
     at org.apache.commons.logging.LogFactory.newFactory(LogFactory.java:543)
     ... 10 more