Utility to format time in milliseconds as format hh:mm:ss .

TimeFormatter.java

package com.utils.formatter;

import java.util.IllegalFormatException;
import java.util.concurrent.TimeUnit;

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

public class TimeFormatter {

	private static final String DURATION_FORMAT = "%02d:%02d:%02d";
	private static final String DURATION_FORMAT_OTHER = "HH:mm:ss";

	/**
	 * Method uses {@link TimeUnit}'s class conversion to format time
	 * @param iMillis
	 *            time as milliseconds
	 * @return formatted time duration
	 */
	public String formartDuration(long iMillis) {
		String hms = "";
		try {
			hms = String.format(
					DURATION_FORMAT,
					TimeUnit.MILLISECONDS.toHours(iMillis),
					TimeUnit.MILLISECONDS.toMinutes(iMillis)
							- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS
									.toHours(iMillis)),
					TimeUnit.MILLISECONDS.toSeconds(iMillis)
							- TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS
									.toMinutes(iMillis)));
		} catch (IllegalFormatException | NullPointerException e) {
			e.printStackTrace();
		}
		return hms;
	}

	/**
	 * Method uses {@link TimeUnit}'s class conversion to format time
	 * @param iMillis
	 *            time as milliseconds
	 * @return formatted time duration
	 */
	public String formartDurationOther(long iMillis) {
		String hms = "";
		try {

			hms = String.format(
					DURATION_FORMAT,
					TimeUnit.MILLISECONDS.toHours(iMillis),
					TimeUnit.MILLISECONDS.toMinutes(iMillis)
							% TimeUnit.HOURS.toMinutes(1),
					TimeUnit.MILLISECONDS.toSeconds(iMillis)
							% TimeUnit.MINUTES.toSeconds(1));
		} catch (IllegalFormatException | NullPointerException e) {
			e.printStackTrace();
		}
		return hms;
	}

	/**
	 * Method uses {@link DurationFormatUtils}'s format method to format
	 * 
	 * @param iMillis
	 *            time as milliseconds
	 * @return formatted time duration
	 */
	public String formartDurationAnother(long iMillis) {
		return DurationFormatUtils.formatDuration(iMillis, DURATION_FORMAT_OTHER);
	}

}