mongod --auth --dbpath "C:\Program Files\MongoDB\Server\4.0\data" --bind_ip 127.0.0.1 --wiredTigerCacheSizeGB 8

// java code
MongoClient client = new MongoClient("127.0.0.1" , 27017);
ClientSession session = client.startSession();


// output
INFO: Monitor thread successfully connected to server with description ServerDescription{address=127.0.0.1:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[4, 0, 1]}, minWireVersion=0, maxWireVersion=7, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=2414624}
Exception in thread "main" com.mongodb.MongoClientException: Sessions are not supported by the MongoDB cluster to which this client is connected