[example] update import order
+import static spark.Spark.get;
+
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import io.opentracing.ActiveSpan;
import io.opentracing.Tracer;
-import org.bson.Document;
-
import java.util.Arrays;
-
-import static spark.Spark.get;
+import org.bson.Document;
public class Hello {
private static MongoDatabase mDatabase;
