@GwtIncompatible("incompatible method")
    public static Calendar toCalendar(final Date date, final TimeZone tz) {
        final Calendar c = Calendar.getInstance(tz);
        c.setTime(date);
        return c;
    }
@ GwtIncompatible ( "incompatible method" ) public static Calendar toCalendar ( final Date date , final TimeZone tz ) { final Calendar c = Calendar . getInstance ( tz ) ; c . setTime ( date ) ; return c ; }
Converts a {@code Date} of a given {@code TimeZone} into a {@code Calendar}
@param date the date to convert to a Calendar
@param tz the time zone of the {@code date}
@return the created Calendar
@throws NullPointerException if {@code date} or {@code tz} is null