Best way to clone java.time.LocalDateTime

Question

I would like to create a copy java.time.LocalDateTime but it does not have clone() method.

What I do is the following:

long epochMilli = Instant.now().toEpochMilli();  LocalDateTime createDate =  LocalDateTime.ofInstant(Instant.ofEpochMilli(epochMilli), ZoneId.systemDefault());  LocalDateTime modificationDate = LocalDateTime.ofInstant(Instant.ofEpochMilli(epochMilli), ZoneId.systemDefault()); 

Is there an easyest way to create two LocalDateTime objects with the exact same date-time value?

Answer 1

Because LocalDateTime is immutable, you can simply reference the same object:

LocalDateTime createDate = LocalDateTime.now();  LocalDateTime modificationDate = createDate; 

Answer 2

Since it's immutable, you can do it this way:

LocalDateTime copy = createDate.plusHours(0); System.out.println(createDate.equals(copy)); // true 

plusHours doc:

Returns a copy of this LocalDateTime with the specified number of hours added. This instance is immutable and unaffected by this method call.