There's several things we should try to improve printing:

• com.dlsc.pdfviewfx.PDFBoxDocument.getPageable() creates a PDFPageable which contains a PDDocument that does not get closed after printing. This could be rectified by using the javax.printing API instead of java.awt.print and implementing a print job listener.
• The awt print dialog looks out of place in a JavaFX application. There is javafx.print API. We should explore using this API (if necessary, maybe javax.printing will already display a nice-enough print dialog)
• The actual printing is located within the demo app at the moment. On the one hand this makes for a very nice / lean API (only one method -- getPageable). On the other hand it requires clients to change, if changes need to happen (like changing from java.awt.print to another API); Maybe putting the whole print procedure within PDFView would be a good option?