Could not initialize class com.google.cloud.bigquery.datatransfer.v1.stub.GrpcDataTransferServiceStub

[deepakstriim]

I'm trying to use BQ Data transfer client just to list supported data sources as an example but I'm seeing this error:
"java.lang.NoClassDefFoundError: Could not initialize class com.google.cloud.bigquery.datatransfer.v1.stub.GrpcDataTransferServiceStub"
This is my pom:

com.google.cloud
google-cloud-bigquerydatatransfer
0.55.1-beta


com.google.protobuf
protobuf-java
3.1.0

This is the sample code:

        Credentials credentials = GoogleCredentials
                .fromStream(new FileInputStream(credsFile));
//        googleCloudStorage = StorageOptions.newBuilder().setCredentials(credentials)
//                .setProjectId(projectId).build().getService();

        DataTransferServiceSettings transferServiceSettings = DataTransferServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credentials))
                .build();
        // Instantiate a client. If you don't specify credentials when constructing a client, the
        // client library will look for credentials in the environment, such as the
        // GOOGLE_APPLICATION_CREDENTIALS environment variable.
        try (DataTransferServiceClient client = DataTransferServiceClient.create(transferServiceSettings)) {
            // Request the list of available data sources.
            String parent = String.format("projects/%s", projectId);
            ListDataSourcesRequest request =
                    ListDataSourcesRequest.newBuilder()
                            .setParent(parent)
                            .build();
            ListDataSourcesPagedResponse response = client.listDataSources(request);

It throws error at the line where dts client is initialized:
DataTransferServiceClient.create(transferServiceSettings)

[yihanzhen]

DataTransferServiceClient.create(transferServiceSettings) throws an IOException. You would need to either catch or propagate the exception.

[deepakstriim]

my main method propogates Exception:
public static void main(String[] args) throws Exception {

[yihanzhen]

Can you share your entire file? I have a repro program the same as your code and my main method throws IOException, but I can't see the issue you have.

[yihanzhen]

Close the issue due to inactivity. Feel free to ask for reopen if you are still seeing the issue.