Storing images in a collection in MongoDB

Storing images in a collection in MongoDB
The following program will create a collection which stores name of employee and his photo.
The program also demonstrates how to retrieve it. The image is first converted to byte array and then stored in mongodb as Binary Object.

package course;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.UnknownHostException;

import org.bson.types.Binary;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
 
/**
 * Java MongoDB : Save image example
 * 
 */
 
public class SaveImageApp {

    public static void main(String[] args) 
    {
        SaveImageApp o = new SaveImageApp();
                
        /** Stores image in a collection **/
        o.withoutUsingGridFS();
    }

    void withoutUsingGridFS() 
    {
        try {
 
            Mongo mongo = new Mongo("localhost", 27017);
            DB db = mongo.getDB("imagedb");
            DBCollection collection = db.getCollection("dummyColl");
            
            String filename = "/home/Pictures/abc.jpg";
            String empname ="ABC";
            
            /** Inserts a record with name = empname and photo 
              *  specified by the filepath 
              **/
            insert(empname,filename,collection);
            
            String destfilename = "/home/Pictures/destfile.jpg";
            /** Retrieves record where name = empname, including his photo. 
              * Retrieved photo is stored at location filename 
              **/
            retrieve(empname, destfilename, collection);
            
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (MongoException e) {
            e.printStackTrace();
        } 
    }
    
    void insert(String empname, String filename, DBCollection collection)
    {
        try
        {
            File imageFile = new File(filename);
            FileInputStream f = new FileInputStream(imageFile);

            byte b[] = new byte[f.available()];
            f.read(b);

            Binary data = new Binary(b);
            BasicDBObject o = new BasicDBObject();
            o.append("name",empname).append("photo",data);
            collection.insert(o);
            System.out.println("Inserted record.");

            f.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    void retrieve(String name, String filename, DBCollection collection)
    {
        byte c[];
        try
        {
            DBObject obj = collection.findOne(new BasicDBObject("name", name));
            String n = (String)obj.get("name");
            c = (byte[])obj.get("photo");
            FileOutputStream fout = new FileOutputStream(filename);
            fout.write(c);
            fout.flush();
            System.out.println("Photo of "+name+" retrieved and stored at "+filename);
            fout.close();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
    }
}