PrettyDate.java

package com.bourke.finch.common;

import java.util.Date;

/**
 * Class for human-readable, pretty date formatting.
 * http://lea.verou.me/2009/04/java-pretty-dates/
 *
 * @author Lea Verou
 */
public class PrettyDate {
    private Date date;

    public PrettyDate() {
        this(new Date());
    }

    public PrettyDate(Date date) {
        this.date = date;
    }

    public String toString() {
        long    current = (new Date()).getTime(),
            timestamp = date.getTime(),
            diff = (current - timestamp)/1000;
        int amount = 0;
        String  what = "";

        /**
         * Second counts
         * 3600: hour
         * 86400: day
         * 604800: week
         * 2592000: month
         * 31536000: year
         */

        if(diff > 31536000) {
            amount = (int)(diff/31536000);
            what = "year";
        }
        else if(diff > 31536000) {
            amount = (int)(diff/31536000);
            what = "month";
        }
        else if(diff > 604800) {
            amount = (int)(diff/604800);
            what = "week";
        }
        else if(diff > 86400) {
            amount = (int)(diff/86400);
            what = "day";
        }
        else if(diff > 3600) {
            amount = (int)(diff/3600);
            what = "hour";
        }
        else if(diff > 60) {
            amount = (int)(diff/60);
            what = "minute";
        }
        else {
            amount = (int)diff;
            what = "second";
            if(amount < 6) {
                return "Just now";
            }
        }

        if(amount == 1) {
            if(what.equals("day")) {
                return "Yesterday";
            }
            else if(what.equals("week") || what.equals("month") || what.equals("year")) {
                return "Last " + what;
            }
        }
        else {
            what += "s";
        }

        return amount + " " + what + " ago";
    }
}