How to Calculate \'Time Ago\' in Java?

How to Calculate Time Ago in Java

In Java, calculating "time ago" can be achieved using libraries or leveraging built-in Android methods.

PrettyTime Library

A popular library for generating time ago strings is PrettyTime. It simplifies the process significantly:

import org.ocpsoft.prettytime.PrettyTime;

PrettyTime p = new PrettyTime();
System.out.println(p.format(new Date()));

This will print the time ago from the current date, such as "moments ago" or "8 minutes ago." PrettyTime supports various locales for internationalization as well.

Android DateUtils

Android offers a built-in DateUtils class that handles time ago calculations specifically for Android applications:

import android.text.format.DateUtils;

String formattedTimeAgo = DateUtils.getRelativeTimeSpanString(dateMillis, nowMillis, DateUtils.MINUTE_IN_MILLIS);

This calculates the time ago between the specified dateMillis and the current time nowMillis. It returns a formatted string using specified time intervals, such as "8 minutes ago" or "8 days ago."

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