Java tutorial
import java.util.Calendar; import java.util.GregorianCalendar; import java.util.TimeZone; public class Main { public static void main(String[] argv) throws Exception { Calendar local = Calendar.getInstance(); Calendar japanCal = new GregorianCalendar(TimeZone.getTimeZone("Japan")); japanCal.setTimeInMillis(local.getTimeInMillis()); int hour = japanCal.get(Calendar.HOUR); // 3 int minutes = japanCal.get(Calendar.MINUTE); // 0 int seconds = japanCal.get(Calendar.SECOND); // 0 boolean am = japanCal.get(Calendar.AM_PM) == Calendar.AM; // true } }