date format - Java DateFormat issue on Mac vs Windows -

i using code below on mac osx 10.10.2 , it's behaving strangely.

import java.text.dateformat; import java.text.simpledateformat; import java.util.date;  public class stringtodate {      public static void main(string[] args) throws exception {         string dateinstring = "23/oct/2015";         dateformat formatter = new simpledateformat("dd/mmm/yyyy");         date date = formatter.parse(dateinstring);         system.out.println(date);     } } 

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output on mac:         sun dec 28 00:00:00 cst 2014

output on windows: fri oct 23 00:00:00 cdt 2015

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why mac output wrong?

y week year. use y year.

dateformat formatter = new simpledateformat("dd/mmm/yyyy"); 

also, make sure dateformat's locale right one.

edit:

a date has millisecond precision, if want nanosecond precision, shouldn't use date , simpledateformat.

s milliseconds. since tell simpledateformat last part of string milliseconds, parses that: 545000000 milliseconds (i.e. bit more 6 days, explains difference between input , output).

to accurate result, millisecond, remove last 6 characters of string, , use pattern "dd-mmm-yyyy-hh.mm.ss.sss".