Short answer: The new API java.time is way better than the old world with java.util.Date and java.util.Calendar. So yes, the new API should be preferred in new code. For a quick overview: Once I had written a comparison of features in table form for various date-time-libraries. There is almost no feature which java.time is missing … Read more
Short answer: The new API java.time is way better than the old world with java.util.Date and java.util.Calendar. So yes, the new API should be preferred in new code. For a quick overview: Once I had written a comparison of features in table form for various date-time-libraries. There is almost no feature which java.time is missing … Read more
With JDK 8 date-time libraries in SDK has been enriched and you can use Duration or Period Interval from JodaTime will do.. A time interval represents a period of time between two instants. Intervals are inclusive of the start instant and exclusive of the end. The end instant is always greater than or equal to … Read more
The issue for you is that you are using mm. You should use MM. MM is for month and mm is for minutes. Try with yyyy-MM-dd HH:mm Other approach: It can be as simple as this (other option is to use joda-time) static final long ONE_MINUTE_IN_MILLIS=60000;//millisecs Calendar date = Calendar.getInstance(); long t= date.getTimeInMillis(); Date afterAddingTenMins=new … Read more
A Date is basically stored as a number of milliseconds since the epoch (1/1/1970). It can be formatted into a String in various ways (e.g. with SimpleDateFormat), but it is never stored as a String. So, what you’re asking for is impossible and makes no sense.
Simple diff (without lib) /** * Get a diff between two dates * @param date1 the oldest date * @param date2 the newest date * @param timeUnit the unit in which you want the diff * @return the diff value, in the provided unit */ public static long getDateDiff(Date date1, Date date2, TimeUnit timeUnit) { … Read more
Java 8 and later With Java 8’s date time API change, Use LocalDate LocalDate date = LocalDate.now().minusDays(300); Similarly you can have LocalDate date = someLocalDateInstance.minusDays(300); Refer to https://stackoverflow.com/a/23885950/260990 for translation between java.util.Date <–> java.time.LocalDateTime Date in = new Date(); LocalDateTime ldt = LocalDateTime.ofInstant(in.toInstant(), ZoneId.systemDefault()); Date out = Date.from(ldt.atZone(ZoneId.systemDefault()).toInstant()); Java 7 and earlier Use Calendar‘s add() … Read more
Convert a Date to a String using DateFormat#format method: String pattern = “MM/dd/yyyy HH:mm:ss”; // Create an instance of SimpleDateFormat used for formatting // the string representation of date according to the chosen pattern DateFormat df = new SimpleDateFormat(pattern); // Get the today date using Calendar object. Date today = Calendar.getInstance().getTime(); // Using DateFormat format … Read more
Use DateFormat. For example, SimpleDateFormat isoFormat = new SimpleDateFormat(“yyyy-MM-dd’T’HH:mm:ss”); isoFormat.setTimeZone(TimeZone.getTimeZone(“UTC”)); Date date = isoFormat.parse(“2010-05-23T09:01:02”);
Calculating the difference between two Java date instances