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    <p>This is what I did, it works for me but I'm sure it can be improved or even yet, maybe there is a hidden (for me) class that does this...</p> <pre><code>/*Imports*/ package javatest; import java.util.Date; public class Main { /** * @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here long segundo = 1000; long minuto = segundo * 60; long hora = minuto * 60; long dia = hora * 24; long semana = dia * 7; long mes = dia * 30; long anio = mes * 12; long startDate = new Date().getTime(); //startDate = startDate - (semana + hora + 30 * minuto + anio*2); startDate = startDate - (mes); long endDate = new Date().getTime(); System.out.println("Inicio: " + new Date(startDate)); System.out.println("Final: " + new Date(endDate)); System.out.println(PrettifyDateDiff(endDate - startDate, true)); } private static String PrettifyDateDiff(long dateDiff, boolean showDisclaimer) { /* Constantes utilizadas para facilitar * la lectura de la aplicación */ long second = 1000; long minute = second * 60; long hour = minute * 60; long day = hour * 24; long week = day * 7; long month = day * 30; long year = month * 12; // Dividimos los milisegundos entre su equivalente de // las constantes de arriba para obtener el valor en la // escala de tiempo correspondiente. long minutes = dateDiff / minute; long hours = dateDiff / hour; long days = dateDiff / day; long weeks = dateDiff / week; long months = dateDiff / month; long years = dateDiff / year; String prettyDateString = ""; if (minutes &gt; 60) { prettyDateString = minutes - (hours * 60) + " minutos."; if (hours &gt; 24) { prettyDateString = hours - (days * 24) + " horas " + prettyDateString; if (days &gt; 7) { prettyDateString = days - (weeks * 7) + " dias " + prettyDateString; if(weeks &gt; 4){ prettyDateString = weeks - (months * 4) + " semanas " + prettyDateString; if(months &gt; 12){ prettyDateString = months - (years * 12) + " meses " + prettyDateString; if(years &gt; 0){ prettyDateString = years + " años " + prettyDateString; } }else{ prettyDateString = months + " meses " + prettyDateString; } }else{ prettyDateString = weeks + " semanas " + prettyDateString; } } else { prettyDateString = days + " dias " + prettyDateString; } } else { prettyDateString = hours + " horas " + prettyDateString; } } else { prettyDateString = minutes + " minutos."; } if(showDisclaimer &amp;&amp; (weeks &gt; 0 || months &gt; 0)){ prettyDateString += " (Semanas de 7 dias, Meses de 30 dias)."; } return prettyDateString; } } </code></pre>
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