JButton backgrounds

We use a lot of JButtons in our Java PDF viewer and thought that the following observations might be of help to other Java developers. When you create a JButton it can be transparent (no background) and you can see through them or have a background color. This is done using the method setOpaque(boolean flag)…

Read More

Java Printing page size problem

Java has a very flexible printing system called JPS which makes printing very easy. Any JComponent can be made to print its contents by adding a print method public int print(Graphics graphics, PageFormat pf, int page) throws PrinterException {} When Java needs to print, it calls this method and whatever you paint onto the graphics…

Read More

An Introduction to PDF Font Technologies

PDF Font Technologies The thing which makes PDF fonts so confusing for many people is the number of different font technologies which can be used in a PDF file. The PDF file specification has been around for 16 years and in that time a number of different font technologies have appeared (as much for ‘business’ as…

Read More

Problems editing PDF files

In a previous article, I wrote about the problems with editing the text in PDF files. PDF files are very different from other file formats such as Word or OpenOffice which stored the data as a set of objects which are then rendered as needed. The PDF file format were really designed for end file…

Read More

Introductory PDF font tutorial

PDF Font Tutorial PDF fonts is a tricky subject and one we frequently get asked about. So I will be writing a set of articles to try and make some sense of the subject. I hope they prove useful and if you have any specific questions, please send me a question and I will make…

Read More