... I send out a list of most interesting libraries and apps in the "Java" section to about 1100 subscribers.
Do you want it too?
Java SDK for integrating with PayPal's Express Checkout / MassPay / Web Payments Pro APIs
Java SDK for Xiaomi Structured Datastore Service
The e-commerce SDK from commercetools running on the Java virtual machine.
for classic Java SDKs.
Oracle Cloud Infrastructure SDK for Java