The PDF Library reads and writes PDFs for all versions of Acrobat (including PDF 2.0), and boasts a dynamic range of features including:

• Transparent Unicode support - create documents in Arabic, Russian or Japanese as easily as English.
• TrueType and Type1 fonts, with sub setting for smaller files. Great for OCR.
• PDF Encryption, for password-protected documents (40 and 128 bit RC4 or AES).
• Embed JPEG, PNG, GIF, TIFF or java.awt.Image images, or add Barcodes directly to the PDF.
• Use Spot colors...