jodatime

问题 I'm using Joda-Time library in Java to keep track a list of time intervals. I want to check if a list of Interval objects fully covers every minute of a month. There's about 30 intervals of varying length from a few hours to a few days. I thought a cheap way to do this is to sort the list of intervals by start time, then successively check if there is a break between the intervals within the range of the month. If yes, then the month is not fully covered. I'm stuck on the first part, sorting

问题 I am trying to migrate from Joda time library to Java time (Java 8). I am unable to find equivalent of ISODateTimeFormat.dateOptionalTimeParser() in java.time Joda ISO formatter has nice parsers: ISODateTimeFormat.dateTimeParser() : generic - selects parser based on string parsed. Similarly: ISODateTimeFormat.dateOptionalTimeParser() . I am finding it difficult to change Joda time to java.time. Can some one guide me? example: String dateTimeString = "2015-01-01T12:29:22+00:00"; String

问题 I need to get month name according to it's number in different Locales . To do this I create a DateTime (or YearMonth , doesn't matter) Object and get its monthOfYear Property: YearMonth md = new YearMonth(1992, month); System.out.println(md.monthOfYear().getAsText(new Locale("ru"))); The thing is that works fine for English language, because Nominative and Genitive names are the same, but for other languages it returns only Genitive, which is not what I need. How to get Nominative month name

问题 I need to get month name according to it's number in different Locales . To do this I create a DateTime (or YearMonth , doesn't matter) Object and get its monthOfYear Property: YearMonth md = new YearMonth(1992, month); System.out.println(md.monthOfYear().getAsText(new Locale("ru"))); The thing is that works fine for English language, because Nominative and Genitive names are the same, but for other languages it returns only Genitive, which is not what I need. How to get Nominative month name

问题 I need to get month name according to it's number in different Locales . To do this I create a DateTime (or YearMonth , doesn't matter) Object and get its monthOfYear Property: YearMonth md = new YearMonth(1992, month); System.out.println(md.monthOfYear().getAsText(new Locale("ru"))); The thing is that works fine for English language, because Nominative and Genitive names are the same, but for other languages it returns only Genitive, which is not what I need. How to get Nominative month name

问题 Inside my Java app I am using Joda-Time to convert the app user entered date from MM/dd/yyyy to ISO 8601 format in order to save it in DB. Can someone please tell me how I can convert the ISO 8601 date back to MM/dd/yyyy format using Joda-Time? My code convert user date to ISO 8601 date format: String date1 = "05/05/2013"; DateTimeFormatter parser1 = DateTimeFormat.forPattern("MM/dd/yyyy"); DateTime dateTimeObj1 = DateTime.parse(date1,parser1); DateTimeFormatter isoDateFormat =

问题 I've a DateTime that represent the beginning of a recurring event. A Days (daily period) will represent the recurring period. I assume that this recurring event will never stop. from = "2013-06-27" period = 3 days nextOccurence will be "2013-06-30", "2013-07-03", "2013-07-06", and so on. "2013-07-03" is an occurence but "2013-07-04" isn't an occurence. I would like to know what is the best way in term of performance to determine if a DateTime is an occurence of the recurring event? In the

问题 there is a form having a drop down for country ,user will select the country ,then there is a drop down for time zone ,user will select the time zone which are available in country selected by the user.Then user will enter the local date( eg: 26-Dec-2014) and time( 23:11)(24 hours time) this entered date and time is for the selected country and time zone. now i have to convert this date and time to GMT time zone. how can i do this using joda time how the daylight saving time(DST) will be

问题 DateTimeFormatter fmt = DateTimeFormat.forPattern("HH:mm:ss"); LocalTime localTime = fmt.parseLocalTime("02:51:20"); System.out.println("LocalTime: "+localTime); I need only 02:51:20 but it outputs as 02:51:20.000. Is there any way that I can remove the .000 (milliseconds) from the output. 回答1: Yes - you just need to format when you print out. Currently you're just using the default toString() representation. If you're happy with the formatter you've already got, you can just use: System.out

问题 In plain Java, I have this code to get the last Sunday of the month. Calendar getNthOfMonth(int n, int day_of_week, int month, int year) { Calendar compareDate = Date(1, month, year); compareDate.set(DAY_OF_WEEK, day_of_week); compareDate.set(DAY_OF_WEEK_IN_MONTH, n); return compareDate; } // Usage Calendar lastSundayOfNovember = getNthOfMonth(-1, SUNDAY, NOVEMBER, 2012) What is a clean and elegant way to achieve the same result using Joda-Time? 回答1: public class Time { public static void