java Java如何在IST中打印时间
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Java How to get time printed in IST
提问by Jon Skeet
I am able to get the time as well as timezone currently. but it always printed in
我目前能够获得时间和时区。但它总是印在
Wed May 23 11:01:08 GMT+05:30 2012
As TimeZone i am getting GMT+05:30. instead of this i want to print IST
作为时区，我得到GMT+05:30. 而不是这个我想打印IST
I tried
我试过
SimpleDateFormat sd = new SimpleDateFormat("yyyy.MM.dd G 'at' HH:mm:ss z");
but still i am getting GMT+05:30
但我仍然得到 GMT+05:30
TimeZone.getDefault().getDisplayName(true, TimeZone.SHORT); is also givine me GMT+05:30
There are various things i tried but did not get desire ouput. I have used Calenderbut still unable to print IST.
我尝试了各种各样的事情，但没有得到欲望输出。我用过Calender但还是无法打印IST。
Can anyone please let me know how to print ISTin Time (even i dont want to print Indian standard time)
谁能告诉我如何及时打印IST（即使我不想打印Indian standard time）
回答by Jon Skeet
You haven't shown where you're actually usingthe SimpleDateFormat. Here's a short but complete example which doesshow IST:
在那里你实际上你没有显示使用的SimpleDateFormat。这是一个简短但完整的示例，它确实显示了 IST：
import java.text.*;
import java.util.*;
class Test {
public static void main(String[] args) {
SimpleDateFormat sd = new SimpleDateFormat(
"yyyy.MM.dd G 'at' HH:mm:ss z");
Date date = new Date();
// TODO: Avoid using the abbreviations when fetching time zones.
// Use the full Olson zone ID instead.
sd.setTimeZone(TimeZone.getTimeZone("IST"));
System.out.println(sd.format(date));
}
}
Output on my machine:
我机器上的输出：
2012.05.23 AD at 11:18:08 IST
Note that if TimeZone.getDefault()isn't showing "IST" then the issue may be:
请注意，如果TimeZone.getDefault()未显示“IST”，则问题可能是：
- That the system can't actually identify your system time zone
- That your Java installation doesn't have full time zone information regarding i18n
- 系统实际上无法识别您的系统时区
- 您的 Java 安装没有关于 i18n 的完整时区信息
Which version of Java are you using, and on what platform?
您使用的是哪个版本的 Java，在什么平台上？
回答by xiaofeng.li
Seems you have a wrong timezone setting. The following code will print 2012.05.23 AD at 11:30:20 IST
似乎您的时区设置错误。以下代码将打印2012.05.23 AD at 11:30:20 IST
TimeZone.setDefault(TimeZone.getTimeZone("IST"));
SimpleDateFormat f = new SimpleDateFormat("yyyy.MM.dd G 'at' HH:mm:ss z");
System.out.println(f.format(new Date()));
However, if I use TimeZone.setDefault(TimeZone.getTimeZone("GMT+05:30"));
但是，如果我使用 TimeZone.setDefault(TimeZone.getTimeZone("GMT+05:30"));
I'll get 2012.05.23 AD at 11:30:20 GMT+05:30.
我会得到2012.05.23 AD at 11:30:20 GMT+05:30。
What comes in, comes out identical.
进来的，出来的都是一样的。
