java stream sort with string comparator ignoring case

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Category:Languages                        .thenComparing(hotel -> hotel.getName().toUpperCase())))                 .collect(Collectors.toList()); 

May I ask if there is a more concise way to write .thenComparing(hotel -> hotel.getName().toUpperCase()), I've found a String.CASE_INSENSITIVE_ORDER but how do I use this comparator on hotel.getName().

update: Applied @Arnaud Denoyelle 's suggestion.                        .thenComparing(Hotel::getName, String.CASE_INSENSITIVE_ORDER))                 .collect(Collectors.toList()); 

It looks better.


String.CASE_INSENSITIVE_ORDER is a Comparator<String> but you are trying to compare some Hotel.

You can get a Comparator<Hotel> like this :

// Map hotel to a String then use the Comparator<String> Comparator.comparing(Hotel::getName, String.CASE_INSENSITIVE_ORDER); 

Then, if you only need to sort, you don't need to use a Stream, you can sort directly :

hotels.sort(Comparator.comparing(Hotel::getName, String.CASE_INSENSITIVE_ORDER)); 

So, with the first comparison criteria, the code becomes :

hotels.sort(   Comparator.comparing(Hotel::getCity)             .thenComparing(Hotel::getName, String.CASE_INSENSITIVE_ORDER) ) 


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