Issue with the number fomatting in german

public byte[] convertExcelToPdf(byte[] excelFile) throws Exception {

    try {

        // Create PDFServices instance using the injected credentials with EU region
        PDFServices pdfServices = new PDFServices(adobeCredentials);
        // Create a temporary file from the uploaded file
        File tempFile = createTempFile(excelFile);

        try {
            // Create PDF using Adobe PDF Services with European locale
            return createPdfFromFile(tempFile, pdfServices, adobeConfig.getRegion());
        } finally {
            // Keep the temporary file for debugging - comment out the deletion
             if (tempFile.exists()) {
                 tempFile.delete();
             }
        }

    } catch (Exception e) {
        throw new Exception("Failed to convert Excel file to PDF: " + e.getMessage(), e);
    }
}

private File createTempFile(byte[] fileBytes) throws IOException {
    // Create a temporary file with Excel extension
    File tempFile = File.createTempFile("excel_", ".xlsx");

    // Verify the file was created properly
    if (!tempFile.exists() || tempFile.length() == 0) {
        throw new IOException("Failed to create temporary Excel file");
    }
    return tempFile;
}

private byte[] createPdfFromFile(File inputFile, PDFServices pdfServices, String region) throws Exception {
    try {
        // Create input stream and upload asset
        FileInputStream inputStream = new FileInputStream(inputFile);
        Asset asset = pdfServices.upload(inputStream, PDFServicesMediaType.XLSX.getMediaType());

        // Create a new job instance (for simple Excel to PDF conversion)
        CreatePDFJob createPDFJob = new CreatePDFJob(asset);

        // Submit the job and get the job result
        String location = pdfServices.submit(createPDFJob);
        PDFServicesResponse<CreatePDFResult> pdfServicesResponse = pdfServices.getJobResult(location, CreatePDFResult.class);

        // Get content from the resulting asset
        Asset resultAsset = pdfServicesResponse.getResult().getAsset();
        StreamAsset streamAsset = pdfServices.getContent(resultAsset);

        // Convert to byte array
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        streamAsset.getInputStream().transferTo(outputStream);

        return outputStream.toByteArray();

    } catch (ServiceApiException | ServiceUsageException | SDKException e) {
        throw new Exception("Adobe API conversion failed: " + e.getMessage(), e);
    } catch (IOException e) {
        throw new Exception("File processing error: " + e.getMessage(), e);
    }
}

This is my java code