Align Paragraph at the center of the page

Question

I am using itext to generate pdf file. I want to align my title in the middle of the page. Presently i am using like this

Paragraph preface = new Paragraph();  
for (int i = 0; i < 10; i++) {
    preface.add(new Paragraph(" "));
}

Is it correct or is there any another best way to do this.

Solution 1

Use Paragraph#setAlignment(int) :

Paragraph preface = new Paragraph(); 
preface.setAlignment(Element.ALIGN_CENTER);

See the ALIGN_* constants in the Element interface for more possible values.

Solution 2

Not sure if this is an old version, but for PdfWriter these methods weren't there. Instead I used:

Paragraph p = new Paragraph("This too shall pass");
p.Alignment = Element.ALIGN_CENTER;

Solution 3

 public static final String DEST = "results/tables/centered_text.pdf";


public static void main(String[] args) throws IOException, DocumentException {
    File file = new File(DEST);
    file.getParentFile().mkdirs();
    new CenteredTextInCell().createPdf(DEST);
}

public void createPdf(String dest) throws IOException, DocumentException {
    Document document = new Document();
    PdfWriter.getInstance(document, new FileOutputStream(dest));
    document.open();
    Font font = new Font(FontFamily.HELVETICA, 12, Font.BOLD);
    Paragraph para = new Paragraph("Test", font);
    para.setLeading(0, 1);
    PdfPTable table = new PdfPTable(1);
    table.setWidthPercentage(100);
    PdfPCell cell = new PdfPCell();
    cell.setMinimumHeight(50);
    cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
    cell.addElement(para);
    table.addCell(cell);
    document.add(table);
    document.close();
}

Solution 4

If you are looking for a solution to Itext7 then you can use the method setTextAlignment(...).

Example:

Paragraph preface = new Paragraph();
// add text
preface.setTextAlignment(TextAlignment.CENTER);

Solution 5

If any one is looking for .NET/C# version, below is how I achieved the CENTER alignment.

I am using iText7 library for .NET/C#, and I achieved this using :

Paragraph preface = new Paragraph();
preface.SetTextAlignment(iText.Layout.Properties.TextAlignment.CENTER);

View more solutions

Comments

[mkl]

What is the advantage of your solution compared to the much simpler solution in the accepted answer?

[mkl]

"The following line doesn't really make sense: p1.setAlignment(Element.TABLE)" - I don't see that code anywhere here, neither in the question nor in any answer.

[shehzad lakhani]

you're using a version of iText that is really, really old. The following line doesn't really make sense: preface.setAlignment(Element.ALIGN_CENTER); so use this method instead above older itext version cell.setVerticalAlignment(Element.ALIGN_MIDDLE); this method much faster and better

[mkl]

Paragraph.setAlignment is still present in the most current iText 5.5.x versions, and your code definitively cannot claim being iText 7 code. So why do you claim that I am using a version of iText which is really, really old? Furthermore, I have not timed the methods, so I cannot say your claim that your method is faster is wrong. But based on what do you claim it is better?