Parse ISO date by Period in Java 8

Question

i want to replace JodaTime by Java 8 DateTime API.

I've got ISO-8601 period described = P2W5DT11H8M

In JodaTime i parse it very simply by executing the following code:

Period.parse("P2W5DT11H8M") and i get the successful Period object.

Can i do the same in Java 8?

Answer 1

A Period in Java 8 only has year/month/day components. A Duration has hour/minute/second components. It seems that you will need to parse the string manually. One option could look like the code below (you need to add input validation etc.) - there may be better alternatives.

public static void main(String[] args) {
  System.out.println(PeriodAndDuration.parse("P2W5DT11H8M"));
}

public static class PeriodAndDuration {
  private final Period p;
  private final Duration d;

  public PeriodAndDuration(Period p, Duration d) {
    this.p = p;
    this.d = d;
  }

  public Period getPeriod() {
    return p;
  }

  public Duration getDuration() {
    return d;
  }

  public static PeriodAndDuration parse(String input) {
    int periodStart = input.indexOf("P");
    int timeStart = input.indexOf("T");
    Period p = Period.parse(input.substring(periodStart, timeStart));
    Duration d = Duration.parse("P" + input.substring(timeStart, input.length()));
    return new PeriodAndDuration(p, d);
  }

  @Override
  public String toString() {
    return p.toString() + d.toString();
  }
}