import java.time.Duration;
 
public class Main {
	public static void main(String[] args) {
		System.out.println(parse("00:02:30"));
		System.out.println(parse("00:00:00"));
	}
 
	static Duration parse(String strDuration) {
		String[] arr = strDuration.split(":");
		Duration duration = Duration.ZERO;
		if (arr.length == 3) {
			strDuration = "PT" + arr[0] + "H" + arr[1] + "M" + arr[2] + "S";
			duration = Duration.parse(strDuration);
		}
		return duration;
	}
}

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