connect MongoDB use Java

Author: hungcdev

mongodb-java/src/main/java/com/hungcdev/mongodb/connection/MongoDBConnection.java

@@ -13,42 +13,37 @@
 import static org.bson.codecs.configuration.CodecRegistries.fromRegistries;
 
 public class MongoDBConnection {
-MongoClient mongoClient;
 
-public void connectMongoDB() {
-mongoClient = MongoClients.create();
-System.out.println("Connect MongoDB successful!");
+public static MongoClient connectMongoDB() {
+return MongoClients.create();
 }
 
-public void connectMongoDB(String ip, int port) {
-mongoClient = MongoClients.create("mongodb://" + ip + ":" + port);
-System.out.println("Connect MongoDB successful!");
+public static MongoClient connectMongoDB(String ip, int port) {
+return MongoClients.create("mongodb://" + ip + ":" + port);
 }
 
-public void connectMongoDBWithPOJOs(String ip, int port) {
+public static MongoClient connectMongoDBWithPOJOs(String ip, int port) {
 ConnectionString connectionString = new ConnectionString("mongodb://" + ip + ":" + port);
+
 CodecRegistry pojoCodecRegistry = CodecRegistries.fromProviders(PojoCodecProvider.builder().automatic(true).build());
 CodecRegistry codecRegistry = CodecRegistries.fromRegistries(MongoClientSettings.getDefaultCodecRegistry(), pojoCodecRegistry);
+
 MongoClientSettings clientSettings = MongoClientSettings.builder()
 .applyConnectionString(connectionString)
 .codecRegistry(codecRegistry)
 .build();
-mongoClient = MongoClients.create(clientSettings);
-System.out.println("Connect MongoDB successful!");
-}
 
-public MongoClient getMongoClient() {
-return mongoClient;
+return MongoClients.create(clientSettings);
 }
 
-public void setMongoClient(MongoClient mongoClient) {
-this.mongoClient = mongoClient;
+public static void main(String[] args) {
+connectionExample();
 }
 
-public static void main(String[] args) {
-MongoDBConnection mongoDbConnection = new MongoDBConnection();
-mongoDbConnection.connectMongoDBWithPOJOs("localhost", 27017);
-MongoDatabase mongoDatabase = mongoDbConnection.getMongoClient().getDatabase("HungcDev");
+private static void connectionExample() {
+MongoClient mongoClient = MongoDBConnection.connectMongoDBWithPOJOs("localhost", 27017);
+MongoDatabase mongoDatabase = mongoClient.getDatabase("HungcDev");
 mongoDatabase.createCollection("User");
 }
+
 }