libjava-gnome-jni 4.1.3-8ubuntu1 (amd64 binary) in ubuntu focal

 These are the Java bindings for GTK+ and GNOME! Featuring a robust
 engineering design, completely generated internals, a lovingly crafted
 layer presenting the public API, and steadily increasing coverage of
 the underlying libraries.
 .
 You can use java-gnome to develop sophisticated user interfaces for
 Linux applications so that they richly integrate with the GNOME Desktop
 while leveraging the power of the Java language and your expertise with
 it.
 .
 This package contains the necessary JNI layer.