Jasper Report + iReport + NetBeans 4

[Ed]

I'm trying to do some reports in jasper, but I have some difficulties to do it, can you help me?
I downloaded from http://jasperreports.sourceforge.net/

jasperreports-0.6.5.jar
jasperreports-0.6.5-applet.jar

and I copied them in this path:

C:\j2sdk1.4.2_07\jre\lib\ext

After that I generated an simple report and compile with iReport 0.4.1

C:\reports\rep_cli.jasper

Then I created a project in NetBeans 4 to execute my report, this is the code:

Code

Code:

package reportload;

import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.export.*;
import net.sf.jasperreports.engine.util.*;
import net.sf.jasperreports.view.*;
import java.sql.*;
import java.io.*;
import java.util.*;

public class Main {
    
    public Main() {
    }
    
    public static void main(String[] args) {
    
    try
    {
     
        String fileName="C:\\reports\\rep_cli.jasper";
  
        String destFileNamePdf="C:\\reports\\rep_cli.pdf";
 
        String destFileNameXls="C:\\reports\\rep_cli.xls";

        Map parameters = new HashMap();
        parameters.put("sql_query", new String("select * from clients"));

        JasperPrint jasperPrint=JasperFillManager.fillReport(fileName, parameters, getConnection());

        JasperExportManager.exportReportToPdfFile(jasperPrint, destFileNamePdf);

 
        JRXlsExporter exporter = new JRXlsExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFileNameXls);
        exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.TRUE);
        exporter.exportReport();

        System.exit(0);
     }
     catch (Exception e)
     {
            System.out.println(e.getMessage());
     }
    }
    

    private static Connection getConnection() throws ClassNotFoundException, SQLException {
        //Configuración de la conexión.
        String driver = "org.postgresql.Driver";
        String connectString = "jdbc:postgresql://192.168.1.7:5432/bdtest";
        String user = "user";
        String password = "123";

        Class.forName(driver);
        Connection conn = DriverManager.getConnection(connectString, user, password);
        
      
    return conn;
}
    
}

When I compile the code it returns to me this error in this line:

Code:

        JasperPrint jasperPrint=JasperFillManager.fillReport(fileName, parameters, getConnection());

the error message is:
Error loading object from file : C:\reports\rep_cli.jasper
I don't know what is the problem
can you help me?
I am desperate

[Jack]

check the versions of your iReport because in the directory of the iReport there is *.jar of the jasperreport you should check with what version you open the reports.

[Heather]

check if these jar are correct
commons-beanutils.jar
commons-collections.jar
commons-digester.jar
commons-logging.jar
itext-1.2.jar
poi-2.5.1-final-20040804.jar