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Java Collections - How to Sort List/Array of Strings by length?

Java Collections Java 

This example shows how to sort strings of list or array by length. It's based on Java 1.8 functions and new Comparator API. 

package com.logicbig.example;

import java.util.*;

public class SortByStringLength {

    public static void main(String[] args) {
        sortStringArrayByLength(new String[]{"0ab", "cdef", "ab", "abcdefg"});
        sortStringListByLength(new ArrayList<>(
                Arrays.asList("0ab", "cdef", "ab", "abcdefg")));
    }

    private static void sortStringListByLength(List<String> list) {
        System.out.println("-- sorting list of string --");
        Collections.sort(list, Comparator.comparing(String::length));
        list.forEach(System.out::println);
    }

    private static void sortStringArrayByLength(String[] stringArray) {
        System.out.println("-- sorting array of string --");
        Arrays.sort(stringArray, Comparator.comparing(String::length));
        Arrays.stream(stringArray).forEach(System.out::println);
    }
}

Output

-- sorting array of string --
ab
0ab
cdef
abcdefg
-- sorting list of string --
ab
0ab
cdef
abcdefg

See Also