ResourceChangeListener onChange event not getting trigger

[#1]

typically you don't need the "bind*" methods at all, if you just want to have simple injection. But the problem in your case seems to be the "@VisibleForTesting" annotation, which makes this method visible for the scr plugin at buildtime, but hides it during runtime. Removing this annotation will likely make your problem go away, but it might have other impact.

Jörg

[#2]

I still see  org.apache.sling.resourceresolver FrameworkEvent ERROR (java.lang.NullPointerException) in error.log file.

arunpatidar26​

here is my Apache Sling Service User Mapper Service

com.xyz.help.content-engine-core-bundle:vulpe=vulpe

here vulpe is the system user

[#3]

in my code, this statement is returning null , I mean I am not getting ResourceResolver object

resolverFactory.getServiceResourceResolver(param)