英文:
How do I convert date formatted string timestamp into date?
问题
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.TimeUnit;
public class TimestampConversion {
public static void main(String[] args) throws ParseException {
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:00");
long now = System.currentTimeMillis();
String toTimeStamp = dateFormatter.format(now);
long nowMinus1Minutes = now - TimeUnit.MINUTES.toMillis(1);
String fromTimeStamp = dateFormatter.format(nowMinus1Minutes);
System.out.println(fromTimeStamp);
System.out.println(toTimeStamp);
Date fromDate = new Date(nowMinus1Minutes);
Date toDate = new Date(now);
System.out.println(dateFormatter.format(fromDate));
System.out.println(dateFormatter.format(toDate));
}
}
Please note that I've provided the translated code as you requested.
英文:
I need to convert the current timestamp and current minus 1-minute timestamp into a given format. I was able to convert the desired format. But it was returning as String.
I need the formatted output as Date instead of String.
public static void main(String[] args) throws ParseException
{
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:00");
long now = System.currentTimeMillis();
String toTimeStamp = dateFormatter.format(now);
long nowMinus1Minutes = now - TimeUnit.MINUTES.toMillis(1);
String fromTimeStamp = dateFormatter.format(nowMinus1Minutes);
System.out.println(fromTimeStamp);
System.out.println(toTimeStamp);
// Tried with parse
Date fromDate = dateFormatter.parse(fromTimeStamp);
Date toDate = dateFormatter.parse(toTimeStamp);
System.out.println(fromDate);
System.out.println(toDate);
}
Output:(String)
2020-07-24 12:13:00
2020-07-24 12:12:00
Output: Pose Parsed the string as Date
Fri Jul 24 12:16:00 IST 2020
Fri Jul 24 12:17:00 IST 2020
Expected Output:
2020-07-24 12:13:00 (As Date Object)
2020-07-24 12:12:00 (As Date Object)
答案1
得分: 2
无法可能。 最近理解。 正在关闭此事。
英文:
Can't be possible. Understood lately. Closing this.
答案2
得分: 1
一旦您将字符串转换为日期，无论最初使用的格式是什么，它都会丢失。
如果您想以 "yyyy-MM-dd HH:mm:00" 的格式显示数据，请再次使用您的格式化程序，否则 Date 类将保持其默认格式：
System.out.println(formatter.format(fromDate));
System.out.println(formatter.format(toDate));
英文:
Once you transform your String into a Date, the initial format you used, whatever it is is lost.
If you want to display your data in the "yyyy-MM-dd HH:mm:00", use your formatter again otherwise Date class will stick to its default format:
System.out.println(formatter.format(fromDate));
System.out.println(formatter.format(toDate));
答案3
得分: 1
如果您需要两个日期对象，可以像这样执行：
OffsetDateTime offsetDateTime1 = OffsetDateTime.now();
OffsetDateTime offsetDateTime2 = offsetDateTime1.minusMinutes(1);
System.out.println(Date.from(offsetDateTime1.toInstant()));
System.out.println(Date.from(offsetDateTime2.toInstant()));
如果您需要以其他格式打印时间戳，之后可以在Date对象上使用SimpleDateFormat。
英文:
If you need two Date-Object, you could do it like this:
OffsetDateTime offsetDateTime1 = OffsetDateTime.now();
OffsetDateTime offsetDateTime2 = offsetDateTime1.minusMinutes(1);
System.out.println(Date.from(offsetDateTime1.toInstant()));
System.out.println(Date.from(offsetDateTime2.toInstant()));
If you need the timestamp to be printed in other format, you can use SimpleDateFormat on the Date-Objects afterwards.
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