题解 | #日期换算#

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

public class Main {
    public static void main(String[] args) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Scanner in = new Scanner(System.in);
        String[] str1 = in.nextLine().split(" ");
        if (str1.length != 6) {
            System.out.println("您输入的数据不合理");
        }
        sdf.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        Date d = sdf.parse(str1[0] + "-" + str1[1] + "-" + str1[2] + " " + str1[3] + ":"
                           + str1[4] + ":" + str1[5]);
        System.out.println("北京时间为：" + sdf.format(d));
        sdf.setTimeZone(TimeZone.getTimeZone("GMT-4"));
        System.out.println("纽约时间为：" + sdf.format(d));
    }
}

目前答案都是手动offset时间

这里应该是考察SimpleDateFormat功能，它支持时区设置，直接转换