Run a Java Client with Username and Password Login

Run a Java client that uses EMP Connector to subscribe to the channel with username and password authentication.

1. Get the EMP Connector project from GitHub. See Step 3: Download and Build the Project.

2. In the /src/main/java/com/salesforce/emp/connector/example folder, open the LoginExample.java source file.

3. Run the LoginExample class and provide arguments.

   Argument	Value
   username	Username of the logged-in user.
   password	Password for the username (or logged-in user).
   channel	/u/notifications/ExampleUserChannel

   Optionally, to receive different events, you can include a replay ID as the last argument. Valid values are:

   • –1 — Get all new events sent after subscription. This option is the default.
   • –2 — Get all new events sent after subscription and all past events within the retention window. Use -2 sparingly. If a large volume of event messages is stored, retrieving all event messages can slow performance.
   • Specific number — Get all events that occurred after the event with the specified replay ID.

4. When you run this client app and generate notifications using the REST resource, the output will look something like:

Generally, don’t handle usernames and passwords of others when running code in production. In a production environment, delegate the login to OAuth. The next step connects to Streaming API with OAuth.