如何在java中转换日期 [英] how to convert date in java
问题描述
我必须将以下日期转换成这个时间戳(
Wed Oct 12 14:17:42 GMT + 05:30 2011
) 星期四,2010年5月27日12:37:27 GMT
这是从服务器通过标题获取的日期。我已将其转换为String对象。现在我必须将它转换成日期格式,如: Wed Oct 12 14:17:42 GMT + 05:30 2011
请你帮帮我怎么把这个格式转换成使用时间戳的格式(
Wed Oct 12 14:17:42 GMT + 05:30 2011
)。 看看 DateFormat
或提供
parse()
和 format()
方法的SimpleDateFormat DateFormat
提供了一堆标准格式,而 SimpleDateFormat
允许您提供自己的格式表达式。
输入日期的示例:
//请注意,您还需要语言环境,由于工作日和月份是用特定的语言编写的,所以在这种情况下的英语
SimpleDateFormat parseFormat = new SimpleDateFormat(E,dd MMM yyyy HH:mm:ss z,Locale.ENGLISH);
SimpleDateFormat writeFormat = new SimpleDateFormat(E MMM dd HH:mm:ss z yyyy,Locale.ENGLISH);
writeFormat.setTimeZone(TimeZone.getTimeZone(GMT));
日期tDate = parseFormat.parse(Wed,12 Oct 2011 14:17:42 GMT);
System.out.println(writeFormat.format(tDate)); // Wed Oct 12 14:17:42 GMT 2011
编辑:如果你想要一个更多的可用API ,请尝试 JodaTime 。
I am new in android .
I have to convert following date into this time stamp (Wed Oct 12 14:17:42 GMT+05:30 2011
)
Thu, 27 May 2010 12:37:27 GMT
This is the date that I am getting from the server through the header. I have converted it into the String object. Now I have to convert it into the Date format like: Wed Oct 12 14:17:42 GMT+05:30 2011
Please could you help me how should I convert it into the (Wed Oct 12 14:17:42 GMT+05:30 2011
) this format using timestamp.
Have a look at DateFormat
or SimpleDateFormat
which provide parse()
and format()
methods. DateFormat
provides a bunch of standard formats whereas SimpleDateFormat
allows you to provide your own format expression.
Example for your input date:
//note that you need the locale as well, since the weekdays and months are written in a specific language, English in that case
SimpleDateFormat parseFormat = new SimpleDateFormat( "E, dd MMM yyyy HH:mm:ss z", Locale.ENGLISH );
SimpleDateFormat writeFormat = new SimpleDateFormat( "E MMM dd HH:mm:ss z yyyy", Locale.ENGLISH );
writeFormat.setTimeZone( TimeZone.getTimeZone( "GMT" ) );
Date tDate = parseFormat.parse( "Wed, 12 Oct 2011 14:17:42 GMT" );
System.out.println(writeFormat.format(tDate )); //Wed Oct 12 14:17:42 GMT 2011
Edit: If you want a more usable API, try JodaTime.
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