Tribuo is a library for Machine Learning, written in Java, which supports classification, regression, clustering, anomaly detection, along with deep learning support via TensorFlow and ONNX. Tribuo has a strong focus on model metadata & tracking through it’s provenance system, supports loading third party models including those trained in Python packages like scikit-learn, and provides a variety of ML algorithms implemented in Java.
Jupyter notebook based tutorials (statically hosted on the website -
https://tribuo.org/learn/4.0/tutorials/, and the notebooks themselves on github -
https://github.com/oracle/tribuo/tree/main/tutorials).