MongoDB 2.4 - Java (find, findOne, count)

import java.net.UnknownHostException;
import java.util.Random;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import com.mongodb.ServerAddress;

public class MongoDB {

public static void main(String[] args) throws UnknownHostException {
MongoClient client = new MongoClient(new ServerAddress("localhost",
27017));
DB database = client.getDB("databaseName");
DBCollection collection = database.getCollection("collectionName");

collection.drop();

for (int i = 0; i < 10; i++) {
collection
.insert(new BasicDBObject("x", new Random().nextInt(100)));
}

DBCursor find = collection.find();

try {
while (find.hasNext()) {
DBObject document = find.next();

System.out.println(document);
}
} finally {
find.close();
}

DBObject findOne = collection.findOne();

System.out.println(findOne);

long count = collection.count();

System.out.println(count);
client.close();
}
}