java-docs-samples

This is a repository that contains java code snippets on Cloud Platform Documentation.

The repo is organized as follows:

Technology Samples:

Credentials Example

The documentation for Application Default Credentials.

BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

The client library looks for credentials using the following rules:

GOOGLE_APPLICATION_CREDENTIALS environment variable, pointing to a service account key JSON file path.
Cloud SDK credentials gcloud auth application-default login
App Engine standard environment credentials.
Compute Engine credentials.

You can override this behavior using setCredentials in BigQueryOptions.newBuilder() by adding setCredentials(Credentials credentials) from ServiceOptions.builder and Credentials.