Java tutorial
import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfPCell; import com.lowagie.text.pdf.PdfPTable; import com.lowagie.text.pdf.PdfWriter; public class CellGrayScalePDF { public static void main(String[] args) { Document document = new Document(PageSize.A4); try { PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("CellGrayScalePDF.pdf")); document.open(); PdfPTable table = new PdfPTable(1); PdfPCell cell = new PdfPCell(new Paragraph("0.25")); cell.setBorder(Rectangle.NO_BORDER); cell.setGrayFill(0.25f); table.addCell(cell); cell = new PdfPCell(new Paragraph("0.5")); cell.setBorder(Rectangle.NO_BORDER); cell.setGrayFill(0.5f); table.addCell(cell); cell = new PdfPCell(new Paragraph("0.75")); cell.setBorder(Rectangle.NO_BORDER); cell.setGrayFill(0.75f); table.addCell(cell); document.add(table); } catch (Exception de) { de.printStackTrace(); } document.close(); } }