French text display problem in JASPER report docs

Please help me regarding this problem

I use jasper report for report in my web project (Tomcat). I am saving the report in .rtf file and from java. Also, I read the text from iReport (jasper tool) and write it in the .doc/.rtf documents.

When the tomcat is in windows OS, the french texts in the .rtf report is displayed as well.

But If the tomcat is in Linux OS, the same french text is displayed with some changes

The Code for saving the report as .rtf
=======================================

JasperPrint jasperPrint = JasperManager.fillReport(jasperReport,parameters,c onn);
JRRtfExporter rtfExporter = new JRRtfExporter(); rtfExporter.setParameter(JRExporterParameter.JASPE R_PRINT, jasperPrint); rtfExporter.setParameter(JRExporterParameter.OUTPU T_FILE_NAME,
request.getRealPath("includes")+"/report.rtf");
rtfExporter.exportReport();



So now the report is saved as report.doc

And I read the document and display it. For that code is
================================================== ======

response.setHeader ("Content-Disposition", "attachment;filename="Report.rtf"");
File f = new File("report.doc");
InputStream in = new FileInputStream(f);
ServletOutputStream outs = response.getOutputStream();
int bit = 256;
int i = 0;
try {
while ((bit) >= 0) {
bit = in.read();
outs.write(bit);
}
} catch (IOException ioe) {
ioe.printStackTrace(System.out);
}
outs.flush();
outs.close();
in.close();

*****************************************


1) Do I need to map any font while i create doc/rtf reports? because in windows it is not a problem...

2) Accent problem is the main one in this .rtf/doc...how to overcome this when we create report?