public static void main(final String[] args) throws InterruptedException {
        MongoClient mongoClient;

        if (args.length == 0) {
            // connect to the local database server
            mongoClient = MongoClients.create();
        } else {
            mongoClient = MongoClients.create(args[0]);
        }

        // create codec registry for POJOs
        CodecRegistry pojoCodecRegistry = fromRegistries(MongoClients.getDefaultCodecRegistry(),
                fromProviders(PojoCodecProvider.builder().automatic(true).build()));

        // get handle to "mydb" database
        MongoDatabase database = mongoClient.getDatabase("mydb").withCodecRegistry(pojoCodecRegistry);

        // get a handle to the "people" collection
        final MongoCollection<Person> collection = database.getCollection("people", Person.class);

        // drop all the data in it
        final CountDownLatch dropLatch = new CountDownLatch(1);
        collection.drop(new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                dropLatch.countDown();
            }
        });
        dropLatch.await();

        // make a document and insert it
        final Person ada = new Person("Ada Byron", 20, new Address("St James Square", "London", "W1"));
        System.out.println("Original Person Model: " + ada);

        collection.insertOne(ada, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                // Person will now have an ObjectId
                System.out.println("Mutated Person Model: " + ada);
                System.out.println("Inserted!");
            }
        });

        // get it (since it's the only one in there since we dropped the rest earlier on)
        SingleResultCallback<Person> printCallback = new SingleResultCallback<Person>() {
            @Override
            public void onResult(final Person person, final Throwable t) {
                System.out.println(person);
            }
        };
        collection.find().first(printCallback);

        // now, lets add some more people so we can explore queries and cursors
        List<Person> people = asList(
                new Person("Charles Babbage", 45, new Address("5 Devonshire Street", "London", "W11")),
                new Person("Alan Turing", 28, new Address("Bletchley Hall", "Bletchley Park", "MK12")),
                new Person("Timothy Berners-Lee", 61, new Address("Colehill", "Wimborne", null))
        );

        final CountDownLatch countLatch = new CountDownLatch(1);
        collection.insertMany(people, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                collection.countDocuments(new SingleResultCallback<Long>() {
                    @Override
                    public void onResult(final Long count, final Throwable t) {
                        System.out.println("total # of people " + count);
                        countLatch.countDown();
                    }
                });
            }
        });
        countLatch.await();

        System.out.println("");
        // lets get all the documents in the collection and print them out
        Block<Person> printBlock = new Block<Person>() {
            @Override
            public void apply(final Person person) {
                System.out.println(person);
            }
        };
        SingleResultCallback<Void> callbackWhenFinished = new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                System.out.println("Operation Finished!");
            }
        };
        collection.find().forEach(printBlock, callbackWhenFinished);

        System.out.println("");
        // now use a query to get 1 document out
        collection.find(eq("address.city", "Wimborne")).first(printCallback);

        System.out.println("");
        // now lets find every over 30
        collection.find(gt("age", 30)).forEach(printBlock, callbackWhenFinished);

        System.out.println("");
        // Update One
        SingleResultCallback<UpdateResult> printModifiedCount = new SingleResultCallback<UpdateResult>() {
            @Override
            public void onResult(final UpdateResult result, final Throwable t) {
                System.out.println(result.getModifiedCount());
            }
        };
        collection.updateOne(eq("name", "Ada Byron"), combine(set("age", 23), set("name", "Ada Lovelace")),
                printModifiedCount);

        System.out.println("");
        // Update Many
        collection.updateMany(not(eq("zip", null)), set("zip", null),
                printModifiedCount);

        System.out.println("");
        // Replace One
        collection.replaceOne(eq("name", "Ada Lovelace"), ada, printModifiedCount);

        // Delete One
        SingleResultCallback<DeleteResult> printDeletedCount = new SingleResultCallback<DeleteResult>() {
            @Override
            public void onResult(final DeleteResult result, final Throwable t) {
                System.out.println(result.getDeletedCount());
            }
        };
        collection.deleteOne(eq("address.city", "Wimborne"), printDeletedCount);

        // Delete Many
        collection.deleteMany(eq("address.city", "London"), printDeletedCount);

        // Clean up
        final CountDownLatch deleteLatch = new CountDownLatch(1);
        database.drop(new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                deleteLatch.countDown();
            }
        });
        deleteLatch.await();

        // release resources
        mongoClient.close();
    }
public static void main(final String[] args) throws InterruptedException {
        MongoClient mongoClient;

        if (args.length == 0) {
            
            mongoClient = MongoClients.create();
        } else {
            mongoClient = MongoClients.create(args[0]);
        }

        
        CodecRegistry pojoCodecRegistry = fromRegistries(MongoClients.getDefaultCodecRegistry(),
                fromProviders(PojoCodecProvider.builder().automatic(true).build()));

        
        MongoDatabase database = mongoClient.getDatabase("mydb").withCodecRegistry(pojoCodecRegistry);

        
        final MongoCollection<Person> collection = database.getCollection("people", Person.class);

        
        final CountDownLatch dropLatch = new CountDownLatch(1);
        collection.drop(new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                dropLatch.countDown();
            }
        });
        dropLatch.await();

        
        final Person ada = new Person("Ada Byron", 20, new Address("St James Square", "London", "W1"));
        System.out.println("Original Person Model: " + ada);

        collection.insertOne(ada, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                
                System.out.println("Mutated Person Model: " + ada);
                System.out.println("Inserted!");
            }
        });

        
        SingleResultCallback<Person> printCallback = new SingleResultCallback<Person>() {
            @Override
            public void onResult(final Person person, final Throwable t) {
                System.out.println(person);
            }
        };
        collection.find().first(printCallback);

        
        List<Person> people = asList(
                new Person("Charles Babbage", 45, new Address("5 Devonshire Street", "London", "W11")),
                new Person("Alan Turing", 28, new Address("Bletchley Hall", "Bletchley Park", "MK12")),
                new Person("Timothy Berners-Lee", 61, new Address("Colehill", "Wimborne", null))
        );

        final CountDownLatch countLatch = new CountDownLatch(1);
        collection.insertMany(people, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                collection.countDocuments(new SingleResultCallback<Long>() {
                    @Override
                    public void onResult(final Long count, final Throwable t) {
                        System.out.println("total # of people " + count);
                        countLatch.countDown();
                    }
                });
            }
        });
        countLatch.await();

        System.out.println("");
        
        Block<Person> printBlock = new Block<Person>() {
            @Override
            public void apply(final Person person) {
                System.out.println(person);
            }
        };
        SingleResultCallback<Void> callbackWhenFinished = new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                System.out.println("Operation Finished!");
            }
        };
        collection.find().forEach(printBlock, callbackWhenFinished);

        System.out.println("");
        
        collection.find(eq("address.city", "Wimborne")).first(printCallback);

        System.out.println("");
        
        collection.find(gt("age", 30)).forEach(printBlock, callbackWhenFinished);

        System.out.println("");
        
        SingleResultCallback<UpdateResult> printModifiedCount = new SingleResultCallback<UpdateResult>() {
            @Override
            public void onResult(final UpdateResult result, final Throwable t) {
                System.out.println(result.getModifiedCount());
            }
        };
        collection.updateOne(eq("name", "Ada Byron"), combine(set("age", 23), set("name", "Ada Lovelace")),
                printModifiedCount);

        System.out.println("");
        
        collection.updateMany(not(eq("zip", null)), set("zip", null),
                printModifiedCount);

        System.out.println("");
        
        collection.replaceOne(eq("name", "Ada Lovelace"), ada, printModifiedCount);

        
        SingleResultCallback<DeleteResult> printDeletedCount = new SingleResultCallback<DeleteResult>() {
            @Override
            public void onResult(final DeleteResult result, final Throwable t) {
                System.out.println(result.getDeletedCount());
            }
        };
        collection.deleteOne(eq("address.city", "Wimborne"), printDeletedCount);

        
        collection.deleteMany(eq("address.city", "London"), printDeletedCount);

        
        final CountDownLatch deleteLatch = new CountDownLatch(1);
        database.drop(new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                deleteLatch.countDown();
            }
        });
        deleteLatch.await();

        
        mongoClient.close();
    }
public static void main ( final String [ ] args ) throws InterruptedException { MongoClient mongoClient ; if ( args . length == 0 ) { // connect to the local database server mongoClient = MongoClients . create ( ) ; } else { mongoClient = MongoClients . create ( args [ 0 ] ) ; } // create codec registry for POJOs CodecRegistry pojoCodecRegistry = fromRegistries ( MongoClients . getDefaultCodecRegistry ( ) , fromProviders ( PojoCodecProvider . builder ( ) . automatic ( true ) . build ( ) ) ) ; // get handle to "mydb" database MongoDatabase database = mongoClient . getDatabase ( "mydb" ) . withCodecRegistry ( pojoCodecRegistry ) ; // get a handle to the "people" collection final MongoCollection < Person > collection = database . getCollection ( "people" , Person . class ) ; // drop all the data in it final CountDownLatch dropLatch = new CountDownLatch ( 1 ) ; collection . drop ( new SingleResultCallback < Void > ( ) { @ Override public void onResult ( final Void result , final Throwable t ) { dropLatch . countDown ( ) ; } } ) ; dropLatch . await ( ) ; // make a document and insert it final Person ada = new Person ( "Ada Byron" , 20 , new Address ( "St James Square" , "London" , "W1" ) ) ; System . out . println ( "Original Person Model: " + ada ) ; collection . insertOne ( ada , new SingleResultCallback < Void > ( ) { @ Override public void onResult ( final Void result , final Throwable t ) { // Person will now have an ObjectId System . out . println ( "Mutated Person Model: " + ada ) ; System . out . println ( "Inserted!" ) ; } } ) ; // get it (since it's the only one in there since we dropped the rest earlier on) SingleResultCallback < Person > printCallback = new SingleResultCallback < Person > ( ) { @ Override public void onResult ( final Person person , final Throwable t ) { System . out . println ( person ) ; } } ; collection . find ( ) . first ( printCallback ) ; // now, lets add some more people so we can explore queries and cursors List < Person > people = asList ( new Person ( "Charles Babbage" , 45 , new Address ( "5 Devonshire Street" , "London" , "W11" ) ) , new Person ( "Alan Turing" , 28 , new Address ( "Bletchley Hall" , "Bletchley Park" , "MK12" ) ) , new Person ( "Timothy Berners-Lee" , 61 , new Address ( "Colehill" , "Wimborne" , null ) ) ) ; final CountDownLatch countLatch = new CountDownLatch ( 1 ) ; collection . insertMany ( people , new SingleResultCallback < Void > ( ) { @ Override public void onResult ( final Void result , final Throwable t ) { collection . countDocuments ( new SingleResultCallback < Long > ( ) { @ Override public void onResult ( final Long count , final Throwable t ) { System . out . println ( "total # of people " + count ) ; countLatch . countDown ( ) ; } } ) ; } } ) ; countLatch . await ( ) ; System . out . println ( "" ) ; // lets get all the documents in the collection and print them out Block < Person > printBlock = new Block < Person > ( ) { @ Override public void apply ( final Person person ) { System . out . println ( person ) ; } } ; SingleResultCallback < Void > callbackWhenFinished = new SingleResultCallback < Void > ( ) { @ Override public void onResult ( final Void result , final Throwable t ) { System . out . println ( "Operation Finished!" ) ; } } ; collection . find ( ) . forEach ( printBlock , callbackWhenFinished ) ; System . out . println ( "" ) ; // now use a query to get 1 document out collection . find ( eq ( "address.city" , "Wimborne" ) ) . first ( printCallback ) ; System . out . println ( "" ) ; // now lets find every over 30 collection . find ( gt ( "age" , 30 ) ) . forEach ( printBlock , callbackWhenFinished ) ; System . out . println ( "" ) ; // Update One SingleResultCallback < UpdateResult > printModifiedCount = new SingleResultCallback < UpdateResult > ( ) { @ Override public void onResult ( final UpdateResult result , final Throwable t ) { System . out . println ( result . getModifiedCount ( ) ) ; } } ; collection . updateOne ( eq ( "name" , "Ada Byron" ) , combine ( set ( "age" , 23 ) , set ( "name" , "Ada Lovelace" ) ) , printModifiedCount ) ; System . out . println ( "" ) ; // Update Many collection . updateMany ( not ( eq ( "zip" , null ) ) , set ( "zip" , null ) , printModifiedCount ) ; System . out . println ( "" ) ; // Replace One collection . replaceOne ( eq ( "name" , "Ada Lovelace" ) , ada , printModifiedCount ) ; // Delete One SingleResultCallback < DeleteResult > printDeletedCount = new SingleResultCallback < DeleteResult > ( ) { @ Override public void onResult ( final DeleteResult result , final Throwable t ) { System . out . println ( result . getDeletedCount ( ) ) ; } } ; collection . deleteOne ( eq ( "address.city" , "Wimborne" ) , printDeletedCount ) ; // Delete Many collection . deleteMany ( eq ( "address.city" , "London" ) , printDeletedCount ) ; // Clean up final CountDownLatch deleteLatch = new CountDownLatch ( 1 ) ; database . drop ( new SingleResultCallback < Void > ( ) { @ Override public void onResult ( final Void result , final Throwable t ) { deleteLatch . countDown ( ) ; } } ) ; deleteLatch . await ( ) ; // release resources mongoClient . close ( ) ; }
Run this main method to see the output of this quick example.

@param args takes an optional single argument for the connection string
@throws InterruptedException if a latch is interrupted
Run this main method to see the output of this quick example .