I create a MongoDB collection with a validator.

db.createCollection("Student", {
    validator: { $jsonSchema: {
        bsonType: "Object",
        required: ["name", "score"],
        properties: {
            name: {
                bsonType: "string",
            },
            score: {
                bsonType: "object",
                required: ["History", "Math", "Computer"],
                properties: {
                    History: {
                        bsonType: "int"
                    },
                    Math: {
                        bsonType: "int"
                    },
                    Computer: {
                        bsonType: "int"
                    }
                }
            }
        }
    }}
})

I want to insert this json.

{
    "name": "scofield",
    "score":{
        "History": 45,
        "Math": 89,
        "Computer": 100
    }
}

by this code

mport .bson.Document;
import com.mongodb.MongoClient;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;

public class Add {

    public static void main(String[] args) {
        // link MongoDB
    MongoClient  mongoClient=new MongoClient("localhost",27017);
    System.out.println("client");
        
    // get MongoDatabase object
        MongoDatabase database = mongoClient.getDatabase("experiment");
        System.out.println("database");
        
        // get MongoCollection object
        MongoCollection<Document> collection = database.getCollection("Student");
        System.out.println("collection");
        
        Document studentDoc = new Document("name", "scofield")
                .append("score", new Document("History", 45)
                                    .append("Math", 89)
                                    .append("Computer", 100));
        System.out.println("create doc");
        
        collection.insertOne(studentDoc);
        System.out.println("insert");
        
        mongoClient.close();
        System.out.println("close");
    }
}

but get this error:

Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
client
database
collection
Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: No server chosen by ReadPreferenceServerSelector{readPreference=primary} from cluster description ClusterDescription{type=UNKNOWN, connectionMode=SINGLE, all=[ServerDescription{address=localhost:27017, type=UNKNOWN, state=CONNECTING}]}. Waiting for 30000 ms before timing out
Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: Opened connection [connectionId{localValue:1, serverValue:10}] to localhost:27017
Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: Monitor thread successfully connected to server with description ServerDescription{address=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[4, 4, 22]}, minWireVersion=0, maxWireVersion=9, maxDocumentSize=16777216, roundTripTimeNanos=592516}
Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: Opened connection [connectionId{localValue:2, serverValue:11}] to localhost:27017
create doc
insert
Nov 20, 2024 4:42:48 PM com.mongodb.diagnostics.logging.JULLogger log
INFO: Closed connection [connectionId{localValue:2, serverValue:11}] to localhost:27017 because the pool has been closed.
close

Even when I change the collection without validator, I get the same error.
Then I simplify the data, and just input a key-value to collection at previous line, and get the same error
MongoDB version: 4.4.22
mongo-java-driver version: 3.2.2

I read the official documents and searched on google but found no solution yet.