public  void doExport(OutputStream out) throws JspException 
{
        try
        {
            // Initialize the table with the appropriate number of columns
            initTable();
            // Initialize the Document and register it with PdfWriter listener and the OutputStream
            Document document = new Document(PageSize.A4.rotate(), 60, 60, 40, 40);
            document.addCreationDate();
            HeaderFooter footer = new HeaderFooter(new Phrase(TagConstants.EMPTY_STRING, smallFont), true);
            footer.setBorder(Rectangle.NO_BORDER);
            footer.setAlignment(Element.ALIGN_CENTER);
            PdfWriter.getInstance(document, out);
            // Fill the virtual PDF table with the necessary data
            generatePDFTable();
            document.open();
            document.setFooter(footer);
            document.add(this.tablePDF);
            document.close();
        }
        catch (Exception e)
        {
            throw new PdfGenerationException(e);
        }
}

 protected  void generateHeaders() throws BadElementException 
{
        Iterator iterator = this.model.getHeaderCellList().iterator();
        while (iterator.hasNext())
        {
            HeaderCell headerCell = (HeaderCell) iterator.next();
            String columnHeader = headerCell.getTitle();
            if (columnHeader == null)
            {
                columnHeader = StringUtils.capitalize(headerCell.getBeanPropertyName());
            }
            Cell hdrCell = getCell(columnHeader);
            hdrCell.setGrayFill(0.9f);
            hdrCell.setHeader(true);
            tablePDF.addCell(hdrCell);
        }
}

Generates the header cells, which persist on every page of the PDF document.

 protected  void generatePDFTable() throws JspException, BadElementException 
{
        if (this.header)
        {
            generateHeaders();
        }
        tablePDF.endHeaders();
        generateRows();
}

The overall PDF table generator.

 protected  void generateRows() throws JspException, BadElementException 
{
        // get the correct iterator (full or partial list according to the exportFull field)
        RowIterator rowIterator = this.model.getRowIterator(this.exportFull);
        // iterator on rows
        while (rowIterator.hasNext())
        {
            Row row = rowIterator.next();
            // iterator on columns
            ColumnIterator columnIterator = row.getColumnIterator(this.model.getHeaderCellList());
            while (columnIterator.hasNext())
            {
                Column column = columnIterator.nextColumn();
                // Get the value to be displayed for the column
                Object value = column.getValue(this.decorated);
                Cell cell = getCell(ObjectUtils.toString(value));
                tablePDF.addCell(cell);
            }
        }
}

Generates all the row cells.

 public String getMimeType() 
{
        return "application/pdf"; //$NON-NLS-1$
}

 protected  void initTable() throws BadElementException 
{
        tablePDF = new Table(this.model.getNumberOfColumns());
        tablePDF.setDefaultVerticalAlignment(Element.ALIGN_TOP);
        tablePDF.setCellsFitPage(true);
        tablePDF.setWidth(100);
        tablePDF.setPadding(2);
        tablePDF.setSpacing(0);
        smallFont = FontFactory.getFont(FontFactory.HELVETICA, 7, Font.NORMAL, new Color(0, 0, 0));
}

Initialize the main info holder table.

 public  void setParameters(TableModel tableModel,
    boolean exportFullList,
    boolean includeHeader,
    boolean decorateValues) 
{
        this.model = tableModel;
        this.exportFull = exportFullList;
        this.header = includeHeader;
        this.decorated = decorateValues;
}