The use of the ZonedDateTime class introduced in Java 8 to truncate a date can be significantly faster than the DateUtils
class from Commons Lang.
Note that this rule is automatically disabled when the project’s sonar.java.source is lower than 8.
Noncompliant Code Example
public Date trunc(Date date) {
return DateUtils.truncate(date, Calendar.SECOND); // Noncompliant
}
Compliant Solution
public Date trunc(Date date) {
Instant instant = date.toInstant();
ZonedDateTime zonedDateTime = instant.atZone(ZoneId.systemDefault());
ZonedDateTime truncatedZonedDateTime = zonedDateTime.truncatedTo(ChronoUnit.SECONDS);
Instant truncatedInstant = truncatedZonedDateTime.toInstant();
return Date.from(truncatedInstant);
}
