String Name = "dbcouch";
                String Password = "password";
                String BucketName="couchdb";

                DefaultCouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder().build();
                CouchbaseCluster cluster = CouchbaseCluster.create(env, "192.168.10.12:2006");
                ClusterManager clusterManager = cluster.clusterManager(Name, Password);

                if (clusterManager.hasBucket(BucketName)) {
                    BucketSettings bucketSettings = clusterManager.getBucket(BucketName);
                    Bucket bucket = cluster.openBucket(BucketName, "");
                    bucket.close();
                }

                cluster.disconnect();

exception: java.lang.RuntimeException: com.couchbase.client.deps.io.netty.channel.ConnectTimeoutException: connection timed out: DESKTOP-PC/192.168.56.1:8091