Hi,

We have some code wich sorts a list of addresses based on the distance between their coordinates. this is done through collections.sort with a custom comparator.

However from time to time an adress without coordinates is in the list causing a NullPointerException. My initial idea to fix this was to have the comparator return 0 as dististance for addresses where at least one of the coordinates is null. I fear this might lead to corruption of the order the 'valid' elements in the list.

so is returning a '0' values for null data in a comparator ok, or is there a cleaner way to resolve this.