我正在使用DateCalendar类做一个示例,这是我的代码:

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:00Z");
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2013);
cal.set(Calendar.MONTH, Calendar.SEPTEMBER);
cal.set(Calendar.DATE, 1);
cal.set(Calendar.HOUR_OF_DAY, 12);
cal.set(Calendar.MINUTE, 15);
Date date = cal.getTime();
TimeZone tz = TimeZone.getTimeZone("IST");


dateFormat.setTimeZone(tz);
String actual = dateFormat.format(date);

System.out.println(actual);


我希望得到结果2013-09-01 12:15:00+0530,但返回的值是2013-09-01 15:45:00+0530,我不知道为什么。

最佳答案

我要移动一些东西

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:00Z");
TimeZone tz = TimeZone.getTimeZone("IST"); // <-- Move this here.

Calendar cal = Calendar.getInstance();
cal.setTimeZone(tz);                       // <-- So we can use it here.
cal.set(Calendar.YEAR, 2013);
cal.set(Calendar.MONTH, Calendar.SEPTEMBER);
cal.set(Calendar.DATE, 1);
cal.set(Calendar.HOUR_OF_DAY, 12);
cal.set(Calendar.MINUTE, 15);
Date date = cal.getTime();
dateFormat.setTimeZone(tz);                // <-- And here.


然后,您的代码将产生预期的输出。那是

2013-09-01 12:15:00+0530

10-06 05:49
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