How to set Timezone in a date object

Question

Hi,
I need to write a method setTimeZone(Date d,TimeZone t) which should take a Java.util.Date and a Timezone object and set the time zone to the date object.
for example...
Date d=new Date();
TimeZone tz=TimeZone.getTimeZone("PST");
//should print the timezone as EDT because the current system timezone is EDT
System.out.println(d);
setTimeZone(d,tz);
//should print the timezone as PST
System.out.println(d);
public void setTimeZone(Date d,TimeZone tz){
Calendar c=Calendar.getInstance(tz);
c.setTime(d);
c.setTimeZone(tz);
d=c.getTime();
System.out.println("Timezone in calendar is "+c.getTimeZone().getDisplayName());
But today is still showing up EDT timezone and Timezone in calendar is shown as PST.The new timzone is not aplied to date object @ d=c.getTime();
statement.
Could any one please help me...
Edited by: mchepuri on Apr 10, 2009 7:27 PM
Edited by: mchepuri on Apr 10, 2009 7:29 PM

Answer 1

Dates don't have any concept of time zones. Think of a Date as a wrapper for a long.
Use SimpleDateFormat. Read the javadocs for some useful methods.