jPDFViewer

jPDFViewer is a Java bean that you can embed in your Java applications and applets to view PDF documents.

With jPDFViewer, you can deliver content to your users right through your application without the need to install third party programs.
jPDFViewer is platform independent, so it can be used in any environment that supports Java, including Mac OS X, Linux, and Windows.
jPDFViewer has a simple interface to load PDF documents and provides scrolling and printing capability. It can open PDF files given a file name on a local or network drive, from a URL and from an input stream for files that are generated runtime or come from a database.