MongoDB - Date insert

That is my code.

<cfset utilDate = CreateObject("java","java.util.Date") />

<cfset utilJSON = CreateObject("java", "com.mongodb.util.JSON") />

<cfset SimpleDaxteFormat  = CreateObject("java", "java.text.SimpleDateFormat").init("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'") />

<cfset SimpleDateFormat2 = CreateObject("java", "java.text.SimpleDateFormat").init("yyyy-MM-dd'T'HH:mm:ss.SSS'+01:00'") />

<cfset jodaIso = CreateObject("java", "org.joda.time.format.ISODateTimeFormat") />

<cfset isoDate1 = "2015-03-25T15:23:57.000Z" />

<cfset isoDate2 = "2015-03-25T15:23:57.000+01:00" />

<cfset isoDate3 = "2015-03-25T15:23:57+01:00" />

<!--- Joda Date-Time --->

<cfset jMillis = jodaIso.dateTimeNoMillis() />

<cfset jpdt = jMillis.parseDateTime(isoDate3) />

<cfset jToDateIso = jpdt.toDateTimeISO() />

<!--- Document data for insert : all three should be DATE Objects! --->

<cfset doc = {

   "date1" = SimpleDateFormat.parse(isoDate1),

   "date2" = SimpleDateFormat2.parse(isoDate2),

   "date3" = jToDateIso.toDate()

} />

<!--- JSON parsing --->   

<cfset doc = utilJSON.parse(SerializeJSON(doc)) />

<cfset col.save(doc) />

Listing Document in MongoClient:

> db.datetest.find().pretty()

{

    "_id" : ObjectId("5512c4fd1e106620a5b49dac"),

    "date1" : "März, 25 2015 15:23:57",

    "date2" : "März, 25 2015 15:23:57",

    "date3" : "März, 25 2015 15:23:57"

}

All three column fields are strings ;(

The fields should be Date-Objects, output should be:

"date1" : ISODate("2015-03-25 15:23:57"), ...