java 将时区应用于 Date 对象
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Apply timezone to Date object
提问by Johan
Date now = new Date();
Date then = new Date((long)obj.timestamp*1000);
TimeZone tz = TimeZone.getDefault();
Not very familiar with java, but is there any way to apply a timezone to a Dateobject? I found thisthread, but this is about Calendar timezones, which i believe is something different?
对java不是很熟悉，但是有什么方法可以将时区应用于Date对象？我找到了这个线程，但这是关于日历时区的，我认为这是不同的？
采纳答案by PermGenError
use SimpleDateFormat.setTimeZone(TimeZone)to set TimeZone.
使用SimpleDateFormat.setTimeZone(TimeZone)设置时区。
SimpleDateFormat sdf = new SimpleDateFormat("yourformat");
TimeZone tz = TimeZone.getDefault();
sdf.setTimeZone(tz);
sdf.format(yourdate); //will return a string rep of a date with the included format
回答by Yogendra Singh
Dateobject uses the current timezone by default.If you are trying to print the time in specific timezone, you may use SimpleDateFormatas below:
Date对象默认使用当前时区。如果您尝试打印特定时区的时间，您可以使用SimpleDateFormat如下：
//put the desired format
DateFormat formatter= new SimpleDateFormat("MM/dd/yyyy hh:mm:ss Z");
//set the desired timezone
formatter.setTimeZone(TimeZone.getTimeZone("Europe/London"));
String formattedNowInTimeZone = formatter.format(now);
String formattedThenInTimeZone = formatter.format(then);
回答by Ralgha
Dateobjects do not have a timezone, it is simply a container for a specific moment in time. If you want to apply a timezone to it, you'll have to use a Calendar. I do it as follows
Date对象没有时区，它只是特定时间的容器。如果要对其应用时区，则必须使用Calendar. 我这样做如下
Calendar cal = Calendar.getInstance();
cal.setTime( date );
If you're just looking to display the Dateadjusted for a timezone, then you can use SimpleDateFormatto apply the proper timezone adjustments.
如果您只是想显示Date调整的时区，那么您可以使用SimpleDateFormat来应用正确的时区调整。
