```java
import java.util.Map;

import static io.qdrant.client.ValueFactory.value;

import io.qdrant.client.grpc.Collections.CreateCollection;
import io.qdrant.client.grpc.Collections.Distance;
import io.qdrant.client.grpc.Collections.VectorParams;
import io.qdrant.client.grpc.Collections.VectorsConfig;
import io.qdrant.client.QdrantClient;
import io.qdrant.client.QdrantGrpcClient;

QdrantClient client = new QdrantClient(
    QdrantGrpcClient.newBuilder("localhost", 6334, false).build());

client
    .createCollectionAsync(
        CreateCollection.newBuilder()
            .setCollectionName("{collection_name}")
            .setVectorsConfig(
                VectorsConfig.newBuilder()
                    .setParams(
                        VectorParams.newBuilder()
                            .setDistance(Distance.Cosine)
                            .setSize(100)
                            .build())
                    .build())
            .putAllMetadata(
                Map.of(
                    "my-metadata-field", value("value-1"),
                    "another-field", value(123)))
            .build())
    .get();
```