From time to time I create something useful or learn how to program something. These notes describe my results.
- Using PHP Global
- The 'global' directive in PHP is unlike that in any other language. When I finally figured it out, I wrote this note.
- Changing Photo Metadata
- Every photo has meta-data, time stamp, shutter speed, and a lot more, including captions. At one time I wanted to automate adding captions. This note summarizes the results of my research.
- Exception Handling in PDFBox
- The developers of PDF Box were debating how to handle exceptions. In this note, my bottom line was to suggest reduced reliance on exceptions.
- Scaling Pages and Images
- For a photo tagging application I wanted to relate a real world map to an on-screen map. This note describes how to convert co-ordinates between the two.
- How to start writing a Java program
- A working interactiveprogram with notes on how to adapt it to be your own application.
- User Interface Tricks
- Various tools and techniques for user interface programming. Especially highlighting the use of HTMLEditorKit to create flexible, discursive user interfaces.
- Pictools Overview
- The physpics website is driven by the Pictools package described here.
|