How can store this file to firebase storage?

private void creatPdf(String Name1, String father_n1, String id_n1, String mob_n1, String dist_sp1, String police_sp1, String crime_sp1, String date_i1, String time_i1, String detail_i1, String address_p1 ) throws FileNotFoundException, URISyntaxException {


        String pdfPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toString();

        File file = new File(pdfPath, System.currentTimeMillis()+".pdf");

        OutputStream outputStream = new FileOutputStream(file);




      //  String pth = file.toURI().getPath();

       // File file1 = new File(new URI(pth));

        PdfWriter writer = new PdfWriter(file);

        PdfDocument pdfDocument = new PdfDocument(writer);

        Document document = new Document(pdfDocument);

        pdfDocument.setDefaultPageSize(PageSize.A4);

        document.setTopMargin(5);

        Drawable drawable = getDrawable(R.drawable.logo);

        Bitmap bitmap = ((BitmapDrawable)drawable).getBitmap();

        ByteArrayOutputStream   stream = new ByteArrayOutputStream();

        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);

        byte[] bitmapData = stream.toByteArray();

        ImageData imageData = ImageDataFactory.create(bitmapData);

        Image image = new Image(imageData);

        image.setHeight(100);
        image.setWidth(100);
        image.scaleToFit(100, 100);
        image.setHorizontalAlignment(HorizontalAlignment.CENTER);

        Paragraph firText = new Paragraph("First Information Report").setBold().setFontSize(19).setTextAlignment(TextAlignment.CENTER);

        float[] width = {100f , 100f};

        Table table = new Table(width);

        table.setHorizontalAlignment(HorizontalAlignment.CENTER);

        table.addCell(new Cell().add(new Paragraph("Name")));
        table.addCell(new Cell().add(new Paragraph(Name1)));

        table.addCell(new Cell().add(new Paragraph("Father Name")));
        table.addCell(new Cell().add(new Paragraph(father_n1)));

        table.addCell(new Cell().add(new Paragraph("CNIC Number")));
        table.addCell(new Cell().add(new Paragraph(id_n1)));

        table.addCell(new Cell().add(new Paragraph("Mobile Number")));
        table.addCell(new Cell().add(new Paragraph(mob_n1)));

        table.addCell(new Cell().add(new Paragraph("Present Address")));
        table.addCell(new Cell().add(new Paragraph(address_p1)));

        table.addCell(new Cell().add(new Paragraph("District")));
        table.addCell(new Cell().add(new Paragraph(dist_sp1)));

        table.addCell(new Cell().add(new Paragraph("Police Station")));
        table.addCell(new Cell().add(new Paragraph(police_sp1)));

        table.addCell(new Cell().add(new Paragraph("Nature of Crime")));
        table.addCell(new Cell().add(new Paragraph(crime_sp1)));

        table.addCell(new Cell().add(new Paragraph("Date of Incident")));
        table.addCell(new Cell().add(new Paragraph(date_i1)));

        table.addCell(new Cell().add(new Paragraph("Time of Incident")));
        table.addCell(new Cell().add(new Paragraph(time_i1)));


        float[] width1 = {940f , 360f};

        Table table1 = new Table(width1);

        table1.setHorizontalAlignment(HorizontalAlignment.CENTER);


        table1.addCell(new Cell(90, 90).add(new Paragraph("Detail of Incident")));
        table1.addCell(new Cell().add(new Paragraph(detail_i1)));


        BarcodeQRCode QRCode = new BarcodeQRCode(Name1+"\n"+father_n1+"\n"+id_n1+"\n"+mob_n1+"\n"+address_p1+"\n"+
                dist_sp1+"\n"+police_sp1+"\n"+crime_sp1+"\n"+date_i1+"\n"+time_i1+"\n"+detail_i1);

        PdfFormXObject qrCodeObject = QRCode.createFormXObject(ColorConstants.BLACK, pdfDocument);

        Image qrImage = new Image(qrCodeObject).setWidth(80).setHorizontalAlignment(HorizontalAlignment.CENTER);


        document.add(image);
        document.add(firText);
        document.add(table);
        document.add(table1);
        document.add(qrImage);

        document.close();
        Toast.makeText(FIRActivity.this, "FIR Registered, check pdf file", Toast.LENGTH_SHORT).show();





    }