BoxDeveloperEditionAPIConnection boxjwtconnection=new BoxDeveloperEditionAPIConnection(userId,devedienttype.USER,clientId,clientSecret,jwtenrypref,null);

Exception in thread "main" com.box.sdk.BoxAPIException: The API returned an error code: 401
at com.box.sdk.BoxAPIResponse.<init>(BoxAPIResponse.java:69)
at com.box.sdk.BoxAPIRequest.trySend(BoxAPIRequest.java:421)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:209)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:184)
at com.box.sdk.BoxUser.getCurrentUser(BoxUser.java:139)