I use, and have used Java a lot too, using the pletora of open-source components, frameworks and libraries to be found on Maven.
Here are some very old projects written in languages I wouldn’t use now. Since even the out-dated software is listed in some search results, I’ll list that here too.
PHPLycosquote - A adapted PHPQuote, to retrieve quotes from the Lycos site instead of Yahoo. Basically a web-scraping tool. Software no longer functions as the site has changed. With some modifications you should get it to work.
Overhoor - An DOS-program I created as teen-ager in Basic. I don’t know if I want to see all that novice basic code again.