How Can I write a java code which scan a image from physical scanner device?

I need to connect physical scanner device and send scanning request then get the image. I got it by using asprise-imaging-core.jar but unfortunately its not free

Morena seems to be a free Java TWAIN library for non-commercial use (I haven't used it).

Also see

• How i can get image from printer "Scanner"
• TWAIN/WIA example for java
• And here's someone who managed to wrap a free DLL with JNI (apparently after fixing some bugs in the DLL): https://www.infoworld.com/article/2074455/bridge-the-gap-between-java-and-twain.html