CODEWITHSUNDEEP
java
user9370262
user9370262

Reputation: 61

How to get last modified and current sysdate time difference in java

I have an API code which writes a token in text file. I required to check last updated time and current system. If the difference is 20 min it will generate a new token.

Problem is I am not getting difference when I use following code. How to get difference for these in minutes in an integer value? 

java.nio.file.Path path = Paths.get("C://Users//xxx//token.txt");
attributes = Files.readAttributes(path, BasicFileAttributes.class);
System.out.println("Updated Time : " + attributes.lastModifiedTime());
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
System.out.println(dateFormat.format(date));

Upvotes: 2

Views: 1134

Answers (2)

vtor
vtor

Reputation: 9329

One way of getting difference is to map FileTime to Instant, which will allow to create Duration between two.

import java.time._

path = Paths.get("C://Users//xxx//token.txt");
attributes = Files.readAttributes(path, BasicFileAttributes.class);
lastModifiedTime = attributes.lastModifiedTime().toInstant()
currentTime = Instant.now()

diffInMins = Duration.between(lastModifiedTime, currentTime).toMinutes()

Calling toMinutes() on Duration will give back difference between given Instants in minutes.

Upvotes: 0

Karol Dowbecki
Karol Dowbecki

Reputation: 44980

Convert to Instant and compare using Instant.isAfter() method. Do not convert to String, that's only useful when displaying human readable time.

Path path = Paths.get("C://Users//xxx//token.txt");
BasicFileAttributes attributes = Files.readAttributes(path, BasicFileAttributes.class);
Instant deadline = Instant.now().minus(20, ChronoUnit.MINUTES);
boolean itsTime = attributes.lastModifiedTime().toInstant().isAfter(deadline);

Upvotes: 1

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