Issue on loading jar files

HI Team,

               I am developing new plugin for ArborText Editor using java by following some reference documents and Help Center, I am facing some issue while running editor after keeping my updated files in this path "\Arbortext Editor\custom\init" I kept my .class files which having main method. And in the path "\Arbortext Editor\custom\classes"  I kept may all supported files as well as supported jar file "Customfunc.jar". I am getting below error while running Editor , could any one please suggest where exactly I am going wrong.

[A18115] Error in initialization file: C:\Program Files (x86)\PTC\Arbortext Editor\custom\init\initCust.class,

java.lang.UnsatisfiedLinkError: no Customfunc in java.library.path

With Regards,

M.Prashant