import io.appwrite.Client;
import io.appwrite.coroutines.CoroutineCallback;
import io.appwrite.services.Databases;

Client client = new Client()
    .setEndpoint("https://<REGION>.cloud.appwrite.io/v1") // Your API Endpoint
    .setProject("<YOUR_PROJECT_ID>") // Your project ID
    .setKey("<YOUR_API_KEY>"); // Your secret API key

Databases databases = new Databases(client);

databases.createOperations(
    "<TRANSACTION_ID>", // transactionId
    listOf(
	    {
	        "action": "create",
	        "databaseId": "<DATABASE_ID>",
	        "collectionId": "<COLLECTION_ID>",
	        "documentId": "<DOCUMENT_ID>",
	        "data": {
	            "name": "Walter O'Brien"
	        }
	    }
	), // operations (optional)
    new CoroutineCallback<>((result, error) -> {
        if (error != null) {
            error.printStackTrace();
            return;
        }

        System.out.println(result);
    })
);