java中日期函数怎样显示不同时区的时间

Date date = new Date(1359641834000L);// 2013-1-31 22:17:14
String dateStr = "2013-1-31 22:17:14";
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
try {
Date dateTmp = dateFormat.parse(dateStr);
System.out.println(dateTmp);
} catch (ParseException e) {
e.printStackTrace();
}
String dateStrTmp = dateFormat.format(date);
System.out.println(dateStrTmp);
举个例子

Locale locale=Locale.CANADA;
Calendar cal=Calendar.getInstance(locale);