How to sort Map values by key in Java?

Question

I have a Map that has strings for both keys and values.

Data is like following:

\"question1\", \"1\"
\"question9\", \"1\"
\"que

Answer 1

Using Java 8:

Map sortedMap = unsortMap.entrySet().stream()
            .sorted(Map.Entry.comparingByKey())
            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
                    (oldValue, newValue) -> oldValue, LinkedHashMap::new));