# Find the duration of difference between two dates in Java

• Last Updated : 02 Jul, 2020

Given two dates start_date and end_date with time in the form of strings, the task is to find the difference between two dates in Java.

Examples:

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Input: start_date = “10-01-2018 01:10:20”, end_date = “10-06-2020 06:30:50”
Output: 2 years, 152 days, 5 hours, 20 minutes, 30 seconds

Input: start_date = “10-01-2019 01:00:00”, end_date = “10-06-2020 06:00:00”
Output: 1 years, 152 days, 5 hours, 0 minutes, 0 seconds

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Method 1: Use SimpleDateFormat and Date class to find the difference between two dates. Below are the steps:

1. Create an object of SimpleDateFormat class and converts string format to date object.
2. Parse both start_date and end_date from a string to produce the date, this can be done by using parse() method of the simpleDateFormat class.
3. Find the time difference between two dates in millisecondes by using the method getTime() in Java as d2.getTime() – d1.getTime().
4. Use date-time mathematical formula to find the difference between two dates. It returns the years, days, hours, minutes, and seconds between the two specifies dates.
5. Print the final result.

Below is the implementation of the above approach:

## Java

 `// Java program for the above approach`` ` `import` `java.text.ParseException;``import` `java.text.SimpleDateFormat;``import` `java.util.Date;`` ` `class` `GFG {`` ` `    ``// Function to print difference in``    ``// time start_date and end_date``    ``static` `void``    ``findDifference(String start_date,``                   ``String end_date)``    ``{`` ` `        ``// SimpleDateFormat converts the``        ``// string format to date object``        ``SimpleDateFormat sdf``            ``= ``new` `SimpleDateFormat(``                ``"dd-MM-yyyy HH:mm:ss"``);`` ` `        ``// Try Block``        ``try` `{`` ` `            ``// parse method is used to parse``            ``// the text from a string to``            ``// produce the date``            ``Date d1 = sdf.parse(start_date);``            ``Date d2 = sdf.parse(end_date);`` ` `            ``// Calucalte time difference``            ``// in milliseconds``            ``long` `difference_In_Time``                ``= d2.getTime() - d1.getTime();`` ` `            ``// Calucalte time difference in``            ``// seconds, minutes, hours, years,``            ``// and days``            ``long` `difference_In_Seconds``                ``= (difference_In_Time``                   ``/ ``1000``)``                  ``% ``60``;`` ` `            ``long` `difference_In_Minutes``                ``= (difference_In_Time``                   ``/ (``1000` `* ``60``))``                  ``% ``60``;`` ` `            ``long` `difference_In_Hours``                ``= (difference_In_Time``                   ``/ (``1000` `* ``60` `* ``60``))``                  ``% ``24``;`` ` `            ``long` `difference_In_Years``                ``= (difference_In_Time``                   ``/ (1000l * ``60` `* ``60` `* ``24` `* ``365``));`` ` `            ``long` `difference_In_Days``                ``= (difference_In_Time``                   ``/ (``1000` `* ``60` `* ``60` `* ``24``))``                  ``% ``365``;`` ` `            ``// Print the date difference in``            ``// years, in days, in hours, in``            ``// minutes, and in seconds`` ` `            ``System.out.print(``                ``"Difference "``                ``+ ``"between two dates is: "``);`` ` `            ``System.out.println(``                ``difference_In_Years``                ``+ ``" years, "``                ``+ difference_In_Days``                ``+ ``" days, "``                ``+ difference_In_Hours``                ``+ ``" hours, "``                ``+ difference_In_Minutes``                ``+ ``" minutes, "``                ``+ difference_In_Seconds``                ``+ ``" seconds"``);``        ``}`` ` `        ``// Catch the Exception``        ``catch` `(ParseException e) {``            ``e.printStackTrace();``        ``}``    ``}`` ` `    ``// Driver Code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``// Given start Date``        ``String start_date``            ``= ``"10-01-2018 01:10:20"``;`` ` `        ``// Given end Date``        ``String end_date``            ``= ``"10-06-2020 06:30:50"``;`` ` `        ``// Function Call``        ``findDifference(start_date, end_date);``    ``}``}`
Output:

Difference between two dates is: 2 years, 152 days, 5 hours, 20 minutes, 30 seconds

Method 2: We can find the difference between two dates in a better way by using Java built-in class TimeUnit.

Below is the implementation of the above approach:

## Java

 `// Java program to find the``// difference between two dates`` ` `import` `java.text.ParseException;``import` `java.text.SimpleDateFormat;``import` `java.util.concurrent.TimeUnit;``import` `java.util.Date;`` ` `class` `GFG {`` ` `    ``// Function to print difference in``    ``// time start_date and end_date``    ``static` `void` `findDifference(String start_date,``                               ``String end_date)``    ``{``        ``// SimpleDateFormat converts the``        ``// string format to date object``        ``SimpleDateFormat sdf``            ``= ``new` `SimpleDateFormat(``                ``"dd-MM-yyyy HH:mm:ss"``);`` ` `        ``// Try Class``        ``try` `{`` ` `            ``// parse method is used to parse``            ``// the text from a string to``            ``// produce the date``            ``Date d1 = sdf.parse(start_date);``            ``Date d2 = sdf.parse(end_date);`` ` `            ``// Calucalte time difference``            ``// in milliseconds``            ``long` `difference_In_Time``                ``= d2.getTime() - d1.getTime();`` ` `            ``// Calucalte time difference in seconds,``            ``// minutes, hours, years, and days``            ``long` `difference_In_Seconds``                ``= TimeUnit.MILLISECONDS``                      ``.toSeconds(difference_In_Time)``                  ``% ``60``;`` ` `            ``long` `difference_In_Minutes``                ``= TimeUnit``                      ``.MILLISECONDS``                      ``.toMinutes(difference_In_Time)``                  ``% ``60``;`` ` `            ``long` `difference_In_Hours``                ``= TimeUnit``                      ``.MILLISECONDS``                      ``.toHours(difference_In_Time)``                  ``% ``24``;`` ` `            ``long` `difference_In_Days``                ``= TimeUnit``                      ``.MILLISECONDS``                      ``.toDays(difference_In_Time)``                  ``% ``365``;`` ` `            ``long` `difference_In_Years``                ``= TimeUnit``                      ``.MILLISECONDS``                      ``.toDays(difference_In_Time)``                  ``/ 365l;`` ` `            ``// Print the date difference in``            ``// years, in days, in hours, in``            ``// minutes, and in seconds``            ``System.out.print(``                ``"Difference"``                ``+ ``" between two dates is: "``);`` ` `            ``// Print result``            ``System.out.println(``                ``difference_In_Years``                ``+ ``" years, "``                ``+ difference_In_Days``                ``+ ``" days, "``                ``+ difference_In_Hours``                ``+ ``" hours, "``                ``+ difference_In_Minutes``                ``+ ``" minutes, "``                ``+ difference_In_Seconds``                ``+ ``" seconds"``);``        ``}``        ``catch` `(ParseException e) {``            ``e.printStackTrace();``        ``}``    ``}`` ` `    ``// Driver Code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``// Given start_date``        ``String start_date``            ``= ``"10-01-2018 01:10:20"``;`` ` `        ``// Given end_date``        ``String end_date``            ``= ``"10-06-2020 06:30:50"``;`` ` `        ``// Function Call``        ``findDifference(start_date,``                       ``end_date);``    ``}``}`
Output:

Difference between two dates is: 2 years, 152 days, 5 hours, 20 minutes, 30 seconds

Method 3: Use Period class in Java to find the difference between two days. The Period.between() method is used to calculate the difference between two dates in years, months, and days.

Below is the implementation of the above approach:

## Java

 `// Java program for the above approach`` ` `import` `java.time.*;``import` `java.util.*;`` ` `class` `GFG {`` ` `    ``// Function to print difference in``    ``// time start_date and end_date``    ``static` `void``    ``findDifference(LocalDate start_date,``                   ``LocalDate end_date)``    ``{`` ` `        ``// find the period between``        ``// the start and end date``        ``Period diff``            ``= Period``                  ``.between(start_date,``                           ``end_date);`` ` `        ``// Print the date difference``        ``// in years, months, and days``        ``System.out.print(``            ``"Difference "``            ``+ ``"between two dates is: "``);`` ` `        ``// Print the result``        ``System.out.printf(``            ``"%d years, %d months"``                ``+ ``" and %d days "``,``            ``diff.getYears(),``            ``diff.getMonths(),``            ``diff.getDays());``    ``}`` ` `    ``// Driver Code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``// Start date``        ``LocalDate start_date``            ``= LocalDate.of(``2018``, ``01``, ``10``);`` ` `        ``// End date``        ``LocalDate end_date``            ``= LocalDate.of(``2020``, ``06``, ``10``);`` ` `        ``// Function Call``        ``findDifference(start_date,``                       ``end_date);``    ``}``}`
Output:

Difference between two dates is: 2 years, 5 months and 0 days

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