REST web service api Listener

ramanan Please confirm me, are you trying to invoke an API exposed through Appian, from a Java application?

Yes Alok . any comments ?

You can do it using Jersey API. All you need to do is, Create a Third Party Credential from Admin Console, (Additionally add the client URL who is going to access the API at: Admin Console > Embedded Interfaces > New Allowed Origin, only in case if you are facing Cross Origin issue while accessing the service) , Now in java application use Jersey API and write the logic accordingly for the type of request i mean GET, POST. And u need to use HttpAuthenticationFeature to authorize the user while accessing the Service.

You can do it using Jersey API. All you need to do is, Create a Third Party Credential from Admin Console, (Additionally add the client URL who is going to access the API at: Admin Console > Embedded Interfaces > New Allowed Origin, only in case if you are facing Cross Origin issue while accessing the service) , Now in java application use Jersey API and write the logic accordingly for the type of request i mean GET, POST. And u need to use HttpAuthenticationFeature to authorize the user while accessing the Service.

Our Java team is using REST Api . Is it same technology as Jersey API ?

Yes.
Jersey API is a framework that provides packages to easily use RESTApi in JAVA.