You can download the jar-archive here.
You need an API key from Openweathermap.org. If you don't have an account there yet, you can sign up here for free to generate your API key for 1.000 free API calls per day.
If you don't want to signup with openweathermap.org and just want to take a short look on this app, feel free to send me an email to art1sec at msitc.de to receive a temporary key that I'll register for you.
If you make use of Yawa regualarly and/or extensivly, PLEASE get an API key on your own. It's totally free for 1.000 API calls per day!
Have fun!
(c) 2022 art1sec at msitc.de