Long date format hex

Hey. Attempts to convert a hexadecimal string into a Long, and then to a Date. If I execute the following code
TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
String filetime = "Wed Apr 13 19:20:19 2011";
DateFormat sdf = new SimpleDateFormat("EEE MMM dd hh:mm:ss yyyy");
Date dateFiletime = sdf.parse(filetime);
long longFiletime = WinBase.FILETIME.dateToFileTime(dateFiletime);
System.out.println(net.proteanit.util.StringUtils.toHexString(longFiletime));
I get on April 13 being the Hex String 01cbfa0fd37f9b80. If I then run this through my program, I get the result Fri Feb 02 18:06:40 GMT 4104773
import java.io.*;
import java.util.*;
import java.math.*;

public class test {
   public Date d;
   public String hexString;

   public test(){
       hexString = "01cbfa0fd37f9b80"; // Apr 13 2011 w/time

       long val = hexToLong(hexString);
       d = new Date(val);
   }

   public static final long hexToLong(String hex)
     throws NumberFormatException {
         int len = hex.length();
         if (len > 16)
             throw new NumberFormatException();

         long l = 0;
         for (int i = 0; i < len; i++) {
             l <<= 4;
             int c = Character.digit(hex.charAt(i), 16);
             if (c < 0)
                 throw new NumberFormatException();
             l |= c;
         }
         return l;
     }

   public static void main(String[] args){
      test sd = new test();
      System.out.println(sd.d);
   }
}
Anyone know why this might be the case?

see you soon

Because this hexadecimal string is not just the millis, since then?
See:

    public static void main(String[] args) {
        String filetime = "Wed Apr 13 19:20:19 2011";
        SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd hh:mm:ss yyyy");
        try {
            Date dateFiletime = sdf.parse(filetime);
            System.out.println(dateFiletime.toString());
            System.out.println(Long.toHexString(dateFiletime.getTime()));
            System.out.println(new Date(Long.parseLong("12f5017aab8", 16)).toString());
            System.out.println(new Date(Long.parseLong("01cbfa0fd37f9b80", 16)).toString());
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }

As a result:

Wed Apr 13 19:20:19 BST 2011
12f5017aab8
Wed Apr 13 19:20:19 BST 2011
Fri Feb 02 18:06:40 GMT 4104773

It's the original analysis.
The hexadecimal string from this date.
The result of the conversion than hexagonal back to a long and back to a Date (using Long.parseLong).
The result of the conversion of your hex for a long, and then for a Date (using Long.parseLong).

If your is over the 4104773 year.

Tags: Java

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