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Barbecue is a Java library that enables the creation of barcodes in a variety of standard formats that can be displayed as Swing/AWT components, included in printed output, generated as EPS and SVG and displayed in a web application.
Barcode4J is a flexible generator for barcodes written in Java and available under the Apache License v2.0. Features: Extensions for Apache FOP, Xalan-J and SAXON, Servlet, command-line interface, output to SVG, EPS, Java2D/AWT and bitmaps.
A library to generate the bidimensional barcode PDF417.
The generated result is a byte array representing the barcode image that can be included in the users application.
Signet uses iText to stamp watermarks on PDFs. It can be used within an online order fulfillment system to place transaction details (such as the date, or buyer's name and contact info) within a PDF prior to download, to discourage copyright violation.