Dynamic Date and Time for a specific country

Question

I need a method for getting dynamic date and time to display it on the JFrame through a label in the dd/MM/yyyy format in Java Netbeans. I used one but that was 2 hours ahead of my country time. Following is the method I used:

public void currentDate(){
    Thread clock  = new Thread(){
    public void run(){
        for(;;){
            //empty for will run forever
            //System.out.print("p");
            Calendar cal = new GregorianCalendar();

            int month = cal.get(Calendar.MONTH);
            int year = cal.get(Calendar.YEAR);
            int day = cal.get(Calendar.DAY_OF_MONTH);

            int second = cal.get(Calendar.SECOND);
            int minute = cal.get(Calendar.MINUTE);
            int hour = cal.get(Calendar.HOUR);

            lab_date.setText(day+"/"+(((month+1)<10)?"0"+(month+1):(month+1))+"/"+year+"  "
                    + hour+":"+minute+":"+second
                    );

                try {
                    sleep(1000);//1000 miliseconds it will sleep which means one second sleep
                } catch (Exception e) {
                    JOptionPane.showMessageDialog(null, e);
                }
        }
    }
    };
    clock.start();
}

Answer 1

A sample illustration to get Date / time for Pakistan country:

    // create a simple date format instance
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 'T' HH:mm:ss");
    // get the time zone of Paskistan country
    TimeZone pakistan = TimeZone.getTimeZone("Asia/Karachi");
    // set the time zone to the date format
    sdf.setTimeZone(pakistan);
    // print the date to the console
    System.err.println(sdf.format(new Date()));