Util class to convert between Java 8 DateTime API and the old java.util.Date class

Java8DateTimeConverter.java

import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.util.Date;

/**
 * Converts between the new Java 8 DateTime API and the old (not-so-beloved) {@link java.util.Date} class.
 * The conversions use the system default locale timezone , otherwise the time will change.
 */
public class Java8DateTimeConverter {

	/**
	 * Convert from Date to LocalDateTime
	 *
	 * @param date the {@link Date} to convert
	 *
	 * @return LocalDateTime at {@link ZoneId#systemDefault()}
	 */
	public static LocalDateTime DateToLocalDateTime(Date date) {
		Instant instant = Instant.ofEpochMilli(date.getTime());
		return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
	}

	/**
	 * Convert from Date to LocalDateTime
	 *
	 * @param date the {@link Date} to convert
	 *
	 * @return LocalDate at {@link ZoneId#systemDefault()}
	 */
	public static LocalDate DateToLocalDate(Date date) {
		Instant instant = Instant.ofEpochMilli(date.getTime());
		return LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalDate();
	}

	/**
	 * Convert from Date to LocalDateTime
	 *
	 * @param time the {@link Date} to convert
	 *
	 * @return LocalTime at {@link ZoneId#systemDefault()}
	 */
	public static LocalTime DateToLocalTime(Date time) {
		Instant instant = Instant.ofEpochMilli(time.getTime());
		return LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalTime();
	}

	/**
	 * Convert from LocalDateTime to Date
	 *
	 * @param ldt the {@link LocalDateTime} to convert
	 *
	 * @return Date at {@link ZoneId#systemDefault()}
	 */
	public static Date LocalDateTimeToDate(LocalDateTime ldt) {
		Instant instant = ldt.atZone(ZoneId.systemDefault()).toInstant();
		return Date.from(instant);
	}

	/**
	 * Convert from LocalDate to Date
	 *
	 * @param ld the {@link LocalDate} to convert
	 *
	 * @return Date at {@link ZoneId#systemDefault()} whereas the time of the date is at start of the day
	 */
	public static Date LocalDateToDate(LocalDate ld) {
		Instant instant = ld.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant();
		return Date.from(instant);
	}

	/**
	 * Convert from LocalTime to Date
	 *
	 * @param lt the {@link LocalTime} to convert
	 *
	 * @return Date at {@link ZoneId#systemDefault()} on todays date
	 */
	public static Date LocalTimeToDate(LocalTime lt) {
		LocalDate now = LocalDate.now();
		Instant instant = lt.atDate(now).atZone(ZoneId.systemDefault()).toInstant();
		return Date.from(instant);
	}
}