date-format

问题 How to get month from a date in java : DateFormat inputDF = new SimpleDateFormat("mm/dd/yy"); Date date1 = inputDF.parse("9/30/11"); Calendar cal = Calendar.getInstance(); cal.setTime(date1); int month = cal.get(Calendar.MONTH); int day = cal.get(Calendar.DAY_OF_MONTH); int year = cal.get(Calendar.YEAR); System.out.println(month+" - "+day+" - "+year); This code return day and year but not month. output : 0 - 30 - 2011 回答1: This is because your format is incorrect: you need "MM/dd/yy" for the

问题 I want to display a date of birth based on the user locale. In my application, one of my fields is the date of birth, which is currently in the format dd/mm/yyyy . So if the user changes his locale, the date format should also change accordingly. Any pointers or code samples would really help me to overcome the problem. 回答1: You can use the DateFormat class that formats a date according to the user locale. Example: String dateOfBirth = "26/02/1974"; SimpleDateFormat sdf = new SimpleDateFormat

问题 I want to display a date of birth based on the user locale. In my application, one of my fields is the date of birth, which is currently in the format dd/mm/yyyy . So if the user changes his locale, the date format should also change accordingly. Any pointers or code samples would really help me to overcome the problem. 回答1: You can use the DateFormat class that formats a date according to the user locale. Example: String dateOfBirth = "26/02/1974"; SimpleDateFormat sdf = new SimpleDateFormat

问题 I am working with dates in an RSS feed, but am finding differing results when using the code below in IE, Chrome and Firefox: new Date('2001-01-01T12:00:00Z') Firefox is happy with that, but Chrome and IE return Invalid Date. I thought I'd try replacing the T and Z as follows: new Date('2001-01-01 12:00:00') This time Chrome is happy with that, but Firefox and IE return Invalid Date. Any ideas what I should do to get a date object in all browsers with this format?! Many thanks, Tim 回答1: This

问题 Everybody cautions regarding Java DateFormat not being thread safe and I understand the concept theoretically. But I'm not able to visualize what actual issues we can face due to this. Say, I've a DateFormat field in a class and the same is used in different methods in the class (formatting dates) in a multi-threaded environment. Will this cause: any exception like format exception discrepancy in data any other issue? Also, please explain why. 回答1: Let's try it out. Here is a program in which

问题 From my JSP Page, I am getting Date in this format. Fri May 13 2011 19:59:09 GMT 0530 (India Standard Time) How can I convert this to the pattern yyyy-MM-dd HH:mm:ss ? 回答1: You can do that using the SimpleDateFormat class. SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String dates=formatter.format(mydate); //mydate is your date object 回答2: In JSP, you'd normally like to use JSTL <fmt:formatDate> for this. You can of course also throw in a scriptlet with

问题 From my JSP Page, I am getting Date in this format. Fri May 13 2011 19:59:09 GMT 0530 (India Standard Time) How can I convert this to the pattern yyyy-MM-dd HH:mm:ss ? 回答1: You can do that using the SimpleDateFormat class. SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String dates=formatter.format(mydate); //mydate is your date object 回答2: In JSP, you'd normally like to use JSTL <fmt:formatDate> for this. You can of course also throw in a scriptlet with

问题 import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Map; import java.util.Scanner; import java.util.TreeMap; public class L10C { public static void main(String[] args) throws Exception { File f = new File("src/Birthdates.txt"); Scanner input = new Scanner(f); //-------------------------------------------------Read File & Create N2D Map Map<String, Date> n2d = new TreeMap<String, Date>(); int n = input.nextInt(); for (int r = 0; r < n; r++) { //

问题 I want to change dates shown everywhere in processmaker to another format(Persian calendar). I have my custom class to format dates. What is the best way to override the default function which returns the formatted date? I just found the CurDate method in the G class. Changed it's returned value but dates are still shown in gregorian format. Is there any other method for formatting dates? I prefer an OOP solution to override the default function instead of hacking the core, if possible.

问题 This question already has answers here : Illegal pattern character 'Y' on Ubuntu (2 answers) Closed 6 years ago . I am trying to format text into a date. Here is what I have: String pattern = "yyyy.MM.dd"; SimpleDateFormat sdf = new SimpleDateFormat(pattern); Date d=sdf.parse("12.1.5"); I get: java.lang.IllegalArgumentException: Illegal pattern character 'Y' at this point. I have also tried using a ParsePosition as well as "2012.01.05". Same error. How can I parse this string into a date? Any