java - adding/removing days from date code fix needed -


i have code here:

public static string addremovedays(string date, int days) throws parseexception     {         simpledateformat k = new simpledateformat("yyyymmdd");         date d = k.parse(date);         d = new date(d.gettime() + days*86400000);         string time = k.format(d);          return time;     }

it take string formed "yyyymmdd", , adds int days it. should work days negative - substract days date. when it's math, returns string formated "yyyymmdd".

at least should do. works small numbers, if try add (or remove), example, year (365 or -365), returns wierd dates.

what's problem? should completley way?

    d = new date(d.gettime() + days*86400000);

if multiply 86400000 365 integer cant hold it. change 86400000 long

    d = new date(d.gettime() + days*86400000l);

and fine.


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