How to sort rows with condition using stream API

Mefisto_Fell :

I study the stream API, I have this task. I need to sort the List collection in the order of their length, if the lengths of several lines are the same, then sort them alphabetically.

My Code:

List<String> phones = new ArrayList<String>();
    Collections.addAll(phones, "iPhone X", "Nokia 9", "Huawei Nexus 6P",
            "Samsung Galaxy S8", "LG G6", "Xiaomi MI6", "Sony Xperia Z5",
            "ASUS Zenfone 3", "Meizu Pro 6", "Heizu Pro 6",
            "Pixel 2");

phones.stream().sorted(Comparator.comparingInt(String::length).reversed()).forEach(System.out::println);

I got this output:

Samsung Galaxy S8
Huawei Nexus 6P
Sony Xperia Z5
ASUS Zenfone 3
Meizu Pro 6 
Heizu Pro 6
Xiaomi MI6
iPhone X
Nokia 9
Pixel 2
LG G6

As you see the lines

 Sony Xperia Z5
 ASUS Zenfone 3

And lines:

    Meizu Pro 6 
    Heizu Pro 6

But my result have to be:

Samsung Galaxy S8
Huawei Nexus 6P
ASUS Zenfone 3
Sony Xperia Z5
Heizu Pro 6
Meizu Pro 6 
Xiaomi MI6
iPhone X
Nokia 9
Pixel 2
LG G6

How can I improve my code so that if the lengths are the same, then the sorting is alphabetical?

How can we do collect results in List >? Where List <Pair <String, Long> for example:

String a = Abcd;
list.add(new Pair(a, a.length));

Karol Dowbecki :

Add thenComparing() to your comparator chain to create a secondary sort order. It will be applied when primary sort is not enough:

phones.stream()
      .sorted(Comparator.comparingInt(String::length).reversed()
                        .thenComparing(Function.identity()))
      .forEach(System.out::println);