Custom java class library

I have custom java class library using in robot framework.I have passed package name in library path but it gives error com.java.* failed importers no module named

Please paste here the full command you use to call robot, and also the complete error message (remove any sensitive info).

command I have used : jython -m robot gherkin_login.robot
java library name :mylibrary

error i got:[ ERROR ] Error in file ‘C:\Users\eclipse-workspace\robot-example\src\main\java\javalibrary\gherkin_login.robot’ on line
3: Importing library ‘mylibrary’ failed: ImportError: No module named mylibrary
Traceback (most recent call last):
None
PYTHONPATH:
C:\jython2.7.2\Lib
classpath
pyclasspath/
C:\jython2.7.2\Lib\site-packages
C:\jython2.7.2\Lib\site-packages\install-1.3.5-py2.7.egg
C:\jython2.7.2\Lib\site-packages\robotframework-4.1.2-py2.7.egg
CLASSPATH:
C:\jython2.7.2\jython.jar