import com.timelysoft.DateTimeFormatter; import com.timelysoft.TimezoneConverter; public class CustomDateTimeFormatter extends DateTimeFormatter { @Override public String format(DateTime dateTime) { } } public class CustomTimezoneConverter extends TimezoneConverter { @Override public DateTime convert(DateTime dateTime, String targetTimezone) { } } public class MyApp { public static void main(String[] args) { CustomDateTimeFormatter formatter = new CustomDateTimeFormatter(); DateTime dateTime = formatter.parse("2022-01-01"); String formattedDate = formatter.format(dateTime); CustomTimezoneConverter converter = new CustomTimezoneConverter(); DateTime convertedDateTime = converter.convert(dateTime, "GMT+8"); } }


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