At the moment i have to write a lot of Integeration Tests for a migration project. The old code uses java.util.Date a lot, but the project uses Java 17. So i wanted to use the newer Date Classes for my tests.

I used the following two helper methods to convert Date to LocalDateTime and back.

private LocalDateTime toLocalDateTime(Date toConvert) {
        var instant = toConvert.toInstant();
        var zonedDateTime = instant.atZone(ZoneId.systemDefault());
        return zonedDateTime.toLocalDateTime();
}

private Date toDate(LocalDateTime toConvert) {
        var zonedDateTime = toConvert.atZone(ZoneId.systemDefault());
        return Date.from(zonedDateTime.toInstant());
}