18: Appendix - Broken DrJava Links

[kraker]

18: Appendix - Broken DrJava Links

The http://drjava.org URLs redirect to https://www.drjava.org/ which appears to be a domain squatter with AI generated slop blog of some kind.

The official DrJava site appears to be hosted on Sourceforge now: https://drjava.sourceforge.net/

Let me know if a PR that fixes the URLs would be welcome.

[kraker]

DrJava hasn't seen active development for a few years. Maybe the student's Java IDE recommendation is due for an update?