I am very interested in learning about errors and bugs in this program. Java does support the programmer with a clear structure and the exceptions feature. I can try to keep the program as free of errors as possible. However, I cannot test everything. Also I like to hear about your ideas for extensions, misprints etc.
Often I get error reports, which are no help for me like "The program crashes" or "The applet does not work". I do need more information.
And it would be nice to get the construction, which caused the problem, or the web page, where the applet did not work.
If you want to help me and have some computer knowledge, run the application from a console using the command "java -jar zirkel.jar" and report any error messages to me. For applets, you can open the Java console window and get the error message from that window.
There is a discussion forum on Yahoo. You are kindly invited to join this group.