DateStuff.java

DateFormat df = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
Date today = Calendar.getInstance().getTime();        
String reportDate = df.format(today);

//------- long to Date -------
The Date constructor (click the link!) accepts the time as long in milliseconds, not seconds.
You need to multiply it by 1000 and make sure that you supply it as long.

Date d = new Date(1220227200L * 1000);

//-------------- Another Example: -------------------------------------

 String DATE_FORMAT_NOW = "yyyy-MM-dd";
 Date date = new Date();
 SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
 String stringDate = sdf.format(date );
    try {
        Date date2 = sdf.parse(stringDate);
        long milliseconds = date2.getTime();
    } catch(Exception e){
    }