Comparing date strings using joda time library

Question

I have two date strings: "2011-04-29" and "2011-01-28", and I want to compare them using Joda Time. Is there any way to do this ?. An example would be truly appreciated.

thanks

Answer 1

First you need to analyze them. Use DateTimeFormat :

 DateTimeFormatter fmt = DateTimeFormat.forPattern("yyyy-MM-dd"); DateTime dateTime1 = fmt.parseDateTime(string1); 

Then use DateTime.isBefore(..) to compare them:

 if (dateTime1.isBefore(dateTime2)) 

Answer 2

You can also use the ltn4java library as follows:

  DataCompare dc = new DataCompare(); int Resultado; Resultado = dc.compareWithTwoDatesString("2011-04-29","2011-01-28","yyyy-MM-dd"); 

Library download page http://code.google.com/p/ltn4java/downloads/list

Answer 3

If the date strings are in the format "yyyy-MM-dd", you can apply a simple string comparison:

 String s1 = new String("2012-01-27"); String s2 = new String("2011-01-28"); System.out.println(s1.compareTo(s2)); 

The result will be TRUE if s1 is lexicographically “greater” than s2, and what you need. For more information, read javadoc for the compareTo () method.

Answer 4

Convert objects to a date and compare them.

Answer 5

In addition to @ Bozho's answer, we can use AbstractInterval.isAfter

 if (dateTime2.isAfter(dateTime1))