Strobe_ :
Basically i have an arraylist of objects like so:
[{name: 'A'}, {name: 'B'}, {name:'?'}]
I want to sort these so that the question mark is at the end like above.
But using the below code.
Collections.sort(myList);
This always results in the object with the question mark first, I think this is due to ASCII ordering? I think the correct way forward is to use a comparator function but i'm not sure how that would take shape with letters and special characters?
How would I implement this?
Tim Biegeleisen :
In Java 8, you may use a two-tiered custom comparator:
// given
List<YourObject> list;
list.sort((o1, o2) -> "?".equals(o1.getName()) ? 1 :
("?".equals(o2.getName()) ? -1 : o1.getName().compareTo(o2.getName())));
The sorting logic here is that if one or the other names be ?, then we always sort that ? last. If both names be ?, or if neither be ?, then we sort using the default lexicographical string sorting.
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