java-date

问题 I have a Kotlin function to get the total number of weeks in a month Code fun getTotalWeeksInMonth(instant: Instant): Int { val calendar = Calendar.getInstance() calendar.time = Date.from(instant) return calendar.getActualMaximum(Calendar.WEEK_OF_MONTH) } However this is using a mix of the old Java date/time APIs ( Date and Calendar ) and the new APIs ( Instant ) How would I achieve the same result, using just the new APIs? 回答1: You can try something like this pair of lines: YearMonth

问题 I am working on an Android app that will display a list of activities. Every activity (i.e. waling, running) has a property Date (i.e. 9 March 8:58 2017). I have two buttons on the screen - Daily and Weekly and I want to switch betweren the two and change the list accordingly. Now, for the Daily list, I don't have to change anything, since a new Activity is created for every day. However, I am not sure how to go about the Weekly list. It will essentially calculate stats (adding up the

问题 I have been working on task where I need to fetch Date from XMLGregorianCalendar.I have converted it to GregorianCalendar and tried to get date from it.But I am seeing difference between original date stored in XMLGregorianCalendar and Date obtained from toGregorianCalendar, I want date to be in UTC format and source time zone is also in UTC.Please find code snippet for reference. SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ"; sdf.setTimeZone(TimeZone.getTimeZone(

问题 I have successfully imported date column from excel to the java code. However, I am unable to change the date format from 17-Dec-2018 to 2018-12-17. Kindly help. public void saveToDatabase(Vector dataHolder) throws ParseException { System.out.println(dataHolder); for(Iterator iterator = dataHolder.iterator();iterator.hasNext();) { List list = (List) iterator.next(); fullName = list.get(0).toString(); idNumberString = list.get(1).toString(); //idNumber = Integer.parseInt ( idNumberString );

问题 I am getting following time from service 'Nov 11 2019 7:30 PM' I know this is US Central Time, I need to get hours between current time and this event time, but i am unable to understand how to convert this date to UTC. I am using following approach, but this does not seem to be working fine. public Date ticketJSONDateFormatter(String dateTime){ SimpleDateFormat simpleDateFormatter = new SimpleDateFormat("MMM d yyyy HH:mm a"); Date parsedDate= null; try { simpleDateFormatter.setTimeZone

问题 I want to convert Java Date to Microsoft OLE Automation - OADate type or want to convert OADate to Java Date. What is the formula of the OADate for Java? Actually I have searched in the stackoverflow and couldnt find the answer, I got the answer and want to share it in this community. For Example: 43013.7659837963 equals to Thu Oct 05 18:23:01 EET 2017 回答1: Microsoft's OLE Automation Date Converter for Java How to convert Java Date to OADate: /** * Convert Date to Microsoft OLE Automation -

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last year . I have a Java Date ( java.util.Date ) - Tue Jul 31 00:53:43 CEST 2018 and a utcTimeOffset = +0200, which says that give, date is +2 hours from UTC. This is a legacy code and Java 8 is not an option. What I am getting is text representation of date as 20180730131847 and utcTimeOffset = +0200 from a

问题 I have a problem changing the current time into milliseconds, the milliseconds shown one month before the set date and time. I know the computer starts the months at 0, how can I solve the problem? First, I transfer the date and the time into String , then I convert the String into date in SimpleDateFormat , and then I convert the date into Long . For example: When the user enter the date "2018/2/14 11:18 "(AM), the date convert to long is "1515899940000" . Here is my code: private void

问题 I am trying to parse a date/time json from server side inside bind viewholder. The date string am trying to parse is this: 2018-06-25T08:06:52Z Here is the code that I am using ( got it from another stack overflow thread) try { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.ENGLISH); df.setTimeZone(TimeZone.getTimeZone("Africa/Nairobi")); Date date = df.parse(timeToConvert); df.setTimeZone(TimeZone.getDefault()); String formattedDate = df.format(date); String

问题 The Oracle Tutorial page for the Temporal Query show this example code. - Code TemporalQueries query = TemporalQueries.precision(); System.out.printf("LocalDate precision is %s%n",LocalDate.now().query(query)); When I compile this segment code, the Compiler throws the error: - Error TemporalQueryExample.java:8: error: incompatible types: TemporalQuery<TemporalUnit> cannot be converted to TemporalQueries TemporalQueries query = TemporalQueries.precision(); ^ TemporalQueryExample.java:10: error