Error while reading blob (binary) data from mongodb using Java

Am not able read blob (binary) record from MongoDB, am using Java 3.4.2 driver.

    BasicDBObject whereClause = new BasicDBObject();
    List<BasicDBObject> obj = new ArrayList<BasicDBObject>();
    obj.add(new BasicDBObject("blobcontentid", "20160601201035069394000000"));
    whereClause.put("$and", obj);

    MongoCursor<Document> cursor = contentcollection.find(whereClause).iterator();

    while (cursor.hasNext()) {
        Document object = cursor.next();
        System.out.println(object.getString("blobcontentid"));
        if (object.get("content") != null){
            byte[] content = (byte []) object.get("content");   
        } else {
            System.out.println("Content is empty");
        }           
    }

Error: java.lang.ClassCastException: org.bson.types.Binary cannot be cast to [B

Same record am reading like this in DB2. byte[] content = aResult.getBytes("CONTENT");

Thank you in advance! Bharathi