Open mongodb connection from java

mongotest.java

package com.sourcerebels.test.mongodb;

import java.net.UnknownHostException;

import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;

public class App 
{
    public static void main( String[] args )
    {
        System.out.println( "Fist acces to mongodb from Java!" );
        MongoClient client = null;
        try {
  		client = new MongoClient("host");
			DB db = client.getDB("database");
			boolean auth = db.authenticate("username", "password".toCharArray());
			
			DBCollection col = db.getCollection("collection");
			
			DBObject obj = col.findOne();
			
			System.out.println(obj);
			
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} finally {
			if (client != null) {
				client.close();
			}
		}
    }
}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.sourcerebels</groupId>
  <artifactId>test-mongodb</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>test-mongodb</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mongodb</groupId>
    	<artifactId>mongo-java-driver</artifactId>
    	<version>2.10.1</version>
    </dependency>
  </dependencies>
</project>