I am trying to sort the below list in such a way that primary address is at the top of the list followed by other address (p.getIsPrimary is a Boolean value and can be null). Is there any other way other than below?
List<CustomerAddress> primaryAddress = customerAddresses.stream() .filter(p->Boolean.TRUE.equals(p.getIsPrimary())) .collect(Collectors.toList()); List<CustomerAddress> secondaryAddress = customerAddresses.stream().collect(Collectors.toList()); secondaryAddress.removeAll(primaryAddress); primaryAddress.addAll(secondaryAddress);```
To sort primary addresses first, call
sort() with a
Comparator that orders primary addresses before non-primary addresses, e.g.
customerAddresses.sort(Comparator.comparingInt( a -> a.getIsPrimary() != null && a.getIsPrimary() ? 0 : 1));
The code sorts by an
int value, a kind of “sort order” value, where 0 = primary and 1 = non-primary.