How to check user entered date is greater than 32 days from current date in java

Question

I would like to validate the date input of the user based on a condition. The condition is new date entered by user should be greater than 32 days. How to do the same?. I have tried the following but it is not working.

final Date getuserDate = validate.date();
logger.debug("UserDate is" + getuserDate);
DateTime currentExpdelDate = new DateTime(getuserDate);
DateTime currentDate = new DateTime();

DateTime dtPlus = currentDate.plusDays(32);
long millisec = dtPlus.getMillis() - currentExpdelDate.getMillis();
if (millisec > 0) {
    long diffDays = millisec / (24 * 60 * 60 * 1000);
    if (diffDays < 32) {

        System.out.println("Date should be greater than 32 days")
    }
}

Answer 1

The universal type DateTime is not suitable for a date-only task. You should therefore choose the type LocalDate in the Joda-Time-library.

Then you can use this constructor . Note that you need to specify the timezone because the current date is not the same date all around in the world at the same time.

java.util.Date input = ...;
DateTimeZone zone = DateTimeZone.forID(...);

LocalDate userDate = new LocalDate(input, zone);
boolean exclude = new LocalDate(zone).plusDays(32).isAfter(userDate);

if (exclude) {
  System.out.println("Date should be greater than 32 days in the future.");
}

Answer 2

如果您已经在使用Java 8 ，则可以使用plusDays()和isBefore()方法使用其新的LocalDate类。