I ran the openstego command line below and got the error "No plugin found with name: lsb". I googled for this error and it said "abstract class should be added." I am not good at java but I want to know how to solve it.
root@~/openstego-0.6.1/lib# java -jar openstego.jar extract --algorithm=lsb -p realobama -sf barackobama2.png -xd /home/kst/Desktop/
No plugin found with name: lsb