Java Data Type - 如何格式日期时间在当前时间UTC

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;


public class Main
{
    public static void main(final String[] args) throws ParseException
    {
        final SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
        f.setTimeZone(TimeZone.getTimeZone("UTC"));
        System.out.println(f.format(new Date()));
    }
}