To run the examples, you will need the username and password credentials. To get your service credentials, follow these steps:

1. Log in to Bluemix at https://bluemix.net.

2. Create an instance of the service:

   1. In the Bluemix Catalog, select the Natural Language Classifier service.
   2. Under Add Service, type a unique name for the service instance in the Service name field. For example, type my-service-name. Leave the default values for the other options.
   3. Click Use.

3. Copy your credentials:

   1. On the left side of the page, click Service Credentials to view your service credentials.
   2. Copy username and password from these service credentials.