import java.time.Duration;

import java.time.Instant;

import java.time.OffsetDateTime;

import java.time.format.DateTimeFormatter;

import java.time.format.DateTimeParseException;

import lombok.extern.slf4j.Slf4j;

import org.apache.commons.lang3.time.DurationFormatUtils;

@Slf4j

public class TimeHelper {

  public static final DateTimeFormatter FORMATTER =

      DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS[XXX][X]");

  public static Instant parseTimeStamp(String timeStamp) {

    return OffsetDateTime.parse(timeStamp, FORMATTER).toInstant();

  }

  public static String getDuration(String startTimeStamp, String endTimeStamp) {

    String duration = "";

    try {

      duration =

          DurationFormatUtils.formatDurationWords(

              Duration.between(parseTimeStamp(startTimeStamp), parseTimeStamp(endTimeStamp))

                  .toMillis(),

              true,

              true);

    } catch (NullPointerException | DateTimeParseException e) {

      log.error(e.getMessage(), e);

    }

    return duration;

  }

}

import java.time.Instant;

import java.time.LocalDate;

import java.time.ZoneOffset;

import java.time.format.DateTimeFormatter;

import java.util.Optional;

import java.util.Set;

private static final DateTimeFormatter VALUATION_TIMESTAMP_PARSER =

      DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss[.SSS][xxx][xx][X]");

  private Instant getTimeStampAsInstant(String timeStamp) {

    return Optional.ofNullable(timeStamp)

        .map(VALUATION_TIMESTAMP_PARSER::parse)

        .map(Instant::from)

        .orElse(null);

  }

import com.fasterxml.jackson.annotation.JsonFormat;

import java.time.Instant; 

@JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss.SSS[xxx][xx][X]")

  private Instant valuationTimeStamp;

import java.time.Duration;

import java.time.Instant;

import java.time.OffsetDateTime;

import java.time.format.DateTimeFormatter;

import java.time.format.DateTimeParseException;

import lombok.extern.slf4j.Slf4j;

import org.apache.commons.lang3.time.DurationFormatUtils;

@Slf4j

public class TimeHelper {

  public static final DateTimeFormatter FORMATTER =

      DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS[XXX][X]");

  public static Instant parseTimeStamp(String timeStamp) {

    return OffsetDateTime.parse(timeStamp, FORMATTER).toInstant();

  }

  public static String getDuration(String startTimeStamp, String endTimeStamp) {

    String duration = "";

    try {

      duration =

          DurationFormatUtils.formatDuration(

              (Duration.between(parseTimeStamp(startTimeStamp), parseTimeStamp(endTimeStamp))

                  .toMillis()),

              "d'd' HH'h' mm'm' ss's'");

    } catch (NullPointerException | DateTimeParseException e) {

      log.error(e.getMessage(), e);

    }

    return duration;

  }

}