Java Programming

hi evrybody... i'm having a problem while using Jasper Reports. I'm trying to Export a jrxml file generated by JasperAssistant plug-in in eclipse. but all i'm having is an exception. the following is my code and the said exception:

CODE:
public class DataSourceApp
{
private static final String TASK_HTML = "html";
private static final String TASK_XLS = "xls";
private static final String TASK_CSV = "csv";
private static final String TASK_RUN = "run";

public static void main(String[] args)
{
String fileName = null;
String taskName = null;
taskName = "html";
fileName = "path\\DataSourceReport.jasper";

try
{
long start = System.currentTimeMillis();
if (TASK_HTML.equals(taskName))
{
JasperPrint jPrint = new JasperPrint();
HashMap parameters = new HashMap();
Connection con = null;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:BOM_DSN","","");
jPrint = JasperFillManager.fillReport("path\\DataSourceReport.jrxml", parameters, con);

JasperExportManager.exportReportToHtmlFile(fileName);
System.err.println("HTML creation time : " + (System.currentTimeMillis() - start));
System.exit(0);
}
catch (JRException e)
{
e.printStackTrace();
System.exit(1);
}
catch (Exception e)
{
e.printStackTrace();
System.exit(1);
}
}


EXCEPTION:

java.io.StreamCorruptedException: invalid stream header
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:737)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:253)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:84)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:161)
at datasource.DataSourceApp.main(DataSourceApp.java:184)

NESTED BY :
java.io.StreamCorruptedException: invalid stream header
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:737)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:253)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:84)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:161)
at datasource.DataSourceApp.main(DataSourceApp.java:184)

NESTED BY :
net.sf.jasperreports.engine.JRException: Error loading object from file : C:\Eclipse\eclipse\workspace\test\BOM_Package\DataSourceReport.jrxml
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:89)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:161)
at datasource.DataSourceApp.main(DataSourceApp.java:184)
Caused by: java.io.StreamCorruptedException: invalid stream header
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:737)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:253)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:84)
... 2 more

hope you can help me asap.. thanks!

--joms