// Import required packages

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.Map;

import java.util.stream.Collectors;

​

// Initialize a HashMap and sort it by value

Map<String, Integer> map = new HashMap<>();

// Populate map

Map<String, Integer> sortedMap = map.entrySet()

    .stream()

    .sorted(Map.Entry.comparingByValue())

    .collect(Collectors.toMap(

        Map.Entry::getKey, 

        Map.Entry::getValue, 

        (oldValue, newValue) -> oldValue, LinkedHashMap::new));