Can't generate complete data to PDF file in java

Question

I have a jtable that i\'m using to display some data. Say I have around 200 rows of data. I am able to generate the pdf, by using the iText libra

Answer 1

Okay, so this is pretty basic example...

JTable supports printing already, through it's various print methods, basically this boils down to getting an instance of the JTable Printable interface and passing it off to the print API, which needs a Graphics2D context to paint to...

Oddly enough, you have a Graphics2D context, so the trick here is to "act" as the printer and call the JTable's Printable print method yourself...

DefaultTableModel model = new DefaultTableModel(0, 10);
for (int row = 0; row < 400; row++) {
    Object[] values = new Object[10];
    for (int col = 0; col < 10; col++) {
        values[col] = ((char) ('A' + col)) + "x" + row;
    }
    model.addRow(values);
}

JTable table = new JTable(model);
table.setSize(table.getPreferredSize());

JTableHeader tableHeader = table.getTableHeader();
tableHeader.setSize(tableHeader.getPreferredSize());

Document doc = new Document(new Rectangle(1350, 1450));
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, 800, 0.50f);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
java.util.Date date = new java.util.Date();
String generatedDate = formatter.format(date);

Paper paper = new Paper();
paper.setSize(1350, 1450);
paper.setImageableArea(10, 10, 1350 - 20, 1450 - 20);

PageFormat pf = new PageFormat();
pf.setPaper(paper);

Printable printable = table.getPrintable(JTable.PrintMode.NORMAL, null, null);
try {

    PdfWriter writer;
    writer = PdfWriter.getInstance(doc, new FileOutputStream("test.pdf"));
    writer.setViewerPreferences(PdfWriter.PageLayoutSinglePage);

    doc.open();

    // Use this to "test" if there is page
    // available for printing, otherwise it prints
    // a empty page and I can't figure out
    // how to remove it :P
    BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = img.createGraphics();

    Font f = new Font(Font.TIMES_ROMAN, 12f);
    int page = 0;
    int result = Printable.NO_SUCH_PAGE;
    PdfContentByte cb = writer.getDirectContent();
    do {

        result = printable.print(g, pf, page);

        if (result == Printable.PAGE_EXISTS) {

            cb.saveState();
            Graphics2D g2 = cb.createGraphics(1350, 1450);

            System.out.println(page);
            result = printable.print(g2, pf, page);

            g2.dispose();
            cb.restoreState();

            doc.add(new Paragraph("REPORTS", f));
            doc.add(new Paragraph("Document Generated On - " + generatedDate, f));

            page++;
            doc.newPage();

        }

    } while (result == Printable.PAGE_EXISTS);
    g.dispose();

} catch (DocumentException | PrinterException | FileNotFoundException e) {
    e.printStackTrace();
} finally {
    doc.close();
}

Now, I need to display the table in order to get the row headers to display, but there might be another work around for this.