How to add new fonts to Itext using java

when I want to use a font is iText I do the following:

protected final static Font FONT_SIZE_11_BOLD = new Font(Font.HELVETICA, 11f, Font.BOLD);

and then I can use it whereever I want, as follows:

monthSize11 = new Chunk(month, FONT_SIZE_11_BOLD);

I want to use Arial instead of HELVETICA, but Arial is not directly available. I mean, I cannot do

new Font(Font.ARIAL, 11f, Font.BOLD);

because Arial is not defined at the Font class, but the Arial.ttf file is at my System under C:\WINDOWS\Fonts. The question is how I can bind the Arial.ttf file to iText and how can I use it.

Many thnaks in advance.

EDIT: I would like to use own fonts. I mean, I have a file called "myCompany.ttf" where own fonts have been defined and at some places I must use. The problem is not only with Arial.

BaseFont base = BaseFont.createFont("c:/windows/fonts/arial.ttf", BaseFont.WINANSI);
Font font = new Font(base, 11f, Font.BOLD);
....

Read more here.

Load it from inside the JAR using a leading slash; otherwise, use the absolute path of your font (C:\...\fonts\Sansation_Regular.ttf). For example:

Font font = FontFactory.getFont("/fonts/Sansation_Regular.ttf",
    BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 0.8f, Font.NORMAL, BaseColor.BLACK);
BaseFont baseFont = font.getBaseFont();

• The relative path of the font is: 'src/main/resources/fonts'
• Using Itext 5.4.5
• Example code

Use BaseFont.createFont to create a new Font object.

You can pass any Type1 or TTF font. You will just have to ensure your font file is distributed alongwith. Refer BaseFont API