Calendar Date Difference Java

This method returns 0 if both the dates are equal it returns a value greater than 0 if date1 is after date2 and it returns a value less than 0 if date1 is before date2.

Calendar date difference java. Java 8 date time api. There is java api joda api available which can also be used to calculate difference between date. In java date is an object which means it includes multiple methods for comparison.

In my previous article i wrote about adding days to an instance of a date in java in this article you ll learn how to calculate the difference between two dates in java using java 8 new date and time api as we ll as the legacy api. Internally a date is represented as a long point in time the number of milliseconds that have elapsed since january 1 1970. Date d2 format parse datestop.

In java two dates can be compared using the compareto method of comparable interface. Represents a date year month day yyyy mm dd localtime. Long diffdays diff 24 60 60 1000.

Java 8 introduced a whole new date and time api classes in java time package to fix the shortcomings of the legacy date and calendar api. Using java time temporal chronounit to find the difference the time api in java 8 represents a unit of date time e g. Results long diff d2 gettime d1 gettime.

Below is a simple java program which uses simpledateformat and decimalformat java apis to perform this action. Each unit provides an implementation for a method named between to calculate the amount of time between two temporal objects in terms of that specific unit. There are various ways to compare java dates.

Seconds or days using temporalunit interface. Date d1 format parse datestart. Joda time results datetime dt1 new datetime d1.