libjna-java-doc 4.5.0-2 (amd64 binary) in ubuntu bionic

 JNA provides Java programs easy access to native shared libraries without
 writing anything but Java code - no JNI or native code is required. This
 functionality is comparable to Windows' Platform/Invoke and Python's ctypes.
 Access is dynamic at runtime without code generation.
 .
 This package contains the Javadoc API documentation.