microsoft-azure-storage/src/com/microsoft/azure/storage/queue/CloudQueue.java
@DoesServiceRequest
    public boolean createIfNotExists(QueueRequestOptions options, OperationContext opContext) throws StorageException {
        options = QueueRequestOptions.populateAndApplyDefaults(options, this.queueServiceClient);

        boolean exists = this.exists(true, options, opContext);
        if (exists) {
            return false;
        }
        else {
            try {
                this.create(options, opContext);
                return true;
            }
            catch (StorageException e) {
                if (e.getHttpStatusCode() == HttpURLConnection.HTTP_CONFLICT
                        && StorageErrorCodeStrings.QUEUE_ALREADY_EXISTS.equals(e.getErrorCode())) {
                    return false;
                }
                else {
                    throw e;
                }
            }
        }
    }
@DoesServiceRequest
    public boolean createIfNotExists(QueueRequestOptions options, OperationContext opContext) throws StorageException {
        options = QueueRequestOptions.populateAndApplyDefaults(options, this.queueServiceClient);

        boolean exists = this.exists(true, options, opContext);
        if (exists) {
            return false;
        }
        else {
            try {
                this.create(options, opContext);
                return true;
            }
            catch (StorageException e) {
                if (e.getHttpStatusCode() == HttpURLConnection.HTTP_CONFLICT
                        && StorageErrorCodeStrings.QUEUE_ALREADY_EXISTS.equals(e.getErrorCode())) {
                    return false;
                }
                else {
                    throw e;
                }
            }
        }
    }
Creates the queue if it does not already exist, using the specified request options and operation context.

@param options
A {@link QueueRequestOptions} object that specifies any additional options for the request. Specifying
<code>null</code> will use the default request options from the associated service client (
{@link CloudQueueClient}).
@param opContext
An {@link OperationContext} object that represents the context for the current operation. This object
is used to track requests to the storage service, and to provide additional runtime information about
the operation.

@return A value of <code>true</code> if the queue is created in the storage service, otherwise <code>false</code>
.

@throws StorageException
If a storage service error occurred during the operation.