You could I suppose just use the Calibri Light font:
Font font = new Font("Calibre Light", Font.ITALIC, 48);
Or you can load the font, the following will load the Calibri Light Italic:
Font font = Font.createFont(Font.TRUETYPE_FONT, new FileInputStream(
new File("calibrili.ttf"))).deriveFont(Font.PLAIN, 48);
The above code line will of course need to be wrapped within a try/catch block since the exceptions FileNotFoundException, FontFormatException, and IOException could possibly be thrown.
Calibri is a Microsoft Font and it packages 6 font files which are:
calibri.ttf The Standard Calibri font
calibrib.ttf Calibri Bold
calibrii.ttf Calibri Italic
calibril.ttf Calibri Light
calibrili.ttf Calibri Light Italic
calibriz.ttf Calibri Bold Italic
You will note that using a font type of Font.ITALIC actually does nothing since Calibri Light Italic is an Italic font. However Font.BOLD will bold the italic text