Timezone conversion

Question

I need to convert from one timezone to another timezone in my project.

I am able to convert from my current timezone to another but not from a different timezone to

Answer 1

    Date date = new Date();
    String formatPattern = ....;
    SimpleDateFormat sdf = new SimpleDateFormat(formatPattern);

    TimeZone T1;
    TimeZone T2;

    // set the Calendar of sdf to timezone T1
    sdf.setTimeZone(T1);
    System.out.println(sdf.format(date));

    // set the Calendar of sdf to timezone T2
    sdf.setTimeZone(T2);
    System.out.println(sdf.format(date));

    // Use the 'calOfT2' instance-methods to get specific info
    // about the time-of-day for date 'date' in timezone T2.
    Calendar calOfT2 = sdf.getCalendar();