Timestamp.java

public String getTimestamp() {
  DateTime post = new DateTime(1468973396572);
  DateTime now = new DateTime();
  Period period = new Period(post, now);

  PeriodFormatter formatter;

  if(period.getYears() != 0){
    formatter = new PeriodFormatterBuilder().appendYears().appendSuffix("Y").printZeroNever().toFormatter();
  }else if(period.getMonths() !=0){
    formatter = new PeriodFormatterBuilder().appendMonths().appendSuffix("M").printZeroNever().toFormatter();
  }else if(period.getWeeks() !=0){
    formatter = new PeriodFormatterBuilder().appendWeeks().appendSuffix("w").printZeroNever().toFormatter();
  }else if(period.getDays() !=0){
    formatter = new PeriodFormatterBuilder().appendDays().appendSuffix("d").printZeroNever().toFormatter();
  }else if(period.getHours() !=0){
    formatter = new PeriodFormatterBuilder().appendHours().appendSuffix("h").printZeroNever().toFormatter();
  }else if(period.getMinutes() !=0){
    formatter = new PeriodFormatterBuilder().appendMinutes().appendSuffix("m").printZeroNever().toFormatter();
  }else{
    formatter = new PeriodFormatterBuilder().appendSeconds().appendSuffix("s").printZeroNever().toFormatter();
  }

  return formatter.print(period);
}

Thank you so much for this.