moment ago in android studio code example

Example: moment ago in android studio

public class TimeAgo {    private static final int SECOND_MILLIS = 1000;    private static final int MINUTE_MILLIS = 60 * SECOND_MILLIS;    private static final int HOUR_MILLIS = 60 * MINUTE_MILLIS;    private static final int DAY_MILLIS = 24 * HOUR_MILLIS;    public static String getTimeAgo(long time) {        if (time < 1000000000000L) {            time *= 1000;        }        long now = System.currentTimeMillis();        if (time > now || time <= 0) {            return null;        }              final long diff = now - time;        if (diff < MINUTE_MILLIS) {            return "just now";        } else if (diff < 2 * MINUTE_MILLIS) {            return "a minute ago";        } else if (diff < 50 * MINUTE_MILLIS) {            return diff / MINUTE_MILLIS + " minutes ago";        } else if (diff < 90 * MINUTE_MILLIS) {            return "an hour ago";        } else if (diff < 24 * HOUR_MILLIS) {            return diff / HOUR_MILLIS + " hours ago";        } else if (diff < 48 * HOUR_MILLIS) {            return "yesterday";        } else {            return diff / DAY_MILLIS + " days ago";        }    }