java.util.Date and the UTC problem -

i know has been hot topic on time... can't find suitable answer.

i have current utc time in ms, need compare current time in machine (so should match).

long myutctime = .....; // reflects utc time // mydate in utc, ok, agree date mydate = new date(); // when use gettime() localtime in ms, although not in utc! in dst long milis = mydate.gettime(); // here 60 minute difference long difference = milis - myutctime; 

how can this?

thanks in advance.

edit: don't need calendar or anything. i'm not showing information user, want use utc times, , date supposed in utc

date mydate = new date(); long milis = mydate.gettime(); 

should equivalent simpler:

long milis = system.currenttimemillis(); 

both should return

the difference, measured in milliseconds, between current time , midnight, january 1, 1970 utc

quick check in linux box:

# cat x.java public class x { public static void main(string[] args) {                 system.out.println( (new java.util.date()).gettime());                 system.out.println( system.currenttimemillis());         } }  # javac x.java ; java x ; perl -e 'print time()*1000' 1305133124654 1305133124654 1305133124000 

perhaps have interpretation issue...