Please take a look at the SimpleTable6 example:
In the first row, we strike through a number using a
PdfFont font = PdfFontFactory.createFont(FontProgramFactory.createFont(FontConstants.HELVETICA)); table.addCell(new Cell().add(new Paragraph("0123456789").setFont(font).setLineThrough()));
In this case, iText has made a couple of decisions for you: where do I put the line? How thick is the line?
If you want to make these decisions yourself, you can use the
Text text1 = new Text("0123456789"); text1.setUnderline(1.5f, -1); table.addCell(new Paragraph(text1)); Text text2 = new Text("0123456789"); text2.setUnderline(1.5f, 3.5f); table.addCell(new Paragraph(text2));
If you pass a negative value for the y-offset parameter, the
Text will be underlined (see first column). You can also use this method to strike through text by passing a positive y-offset.
As you can see, we also defined the thickness of the line (
1.5f). There is another
setUnderline() method that also allows you to pass the following parameters:
color - the color of the line or null to follow the text color
thickness - the absolute thickness of the line
thicknessMul - the thickness multiplication factor with the font size
yPosition - the absolute y position relative to the baseline
yPositionMul - the position multiplication factor with the font size
cap - the end line cap.
Click this link if you want to see how to answer this question in iText 5.