I maintain Linux systems that are used for programming at a small liberal arts university. When students print they are generally not very observant to which printer they are printing too. It is useful to be able to set a default printer so that students don't have to figure out which printer they are using. Also, some of the professors that use Jedit to print lots of code examples get annoyed that they have to select the correct printer every time they go to print. If Jedit would use the default system printer or allow one to be configured that would improve the user experience for those at my university. I'm sure other users of Jedit would also like a default printer option.