![]() earlier HashMap stores * integer keys on the order they are inserted but from Java 8 it has changed. A hash map that uses primitive ints for the key rather than objects. * HashMap doesn't guarantee any order, so you cannot rely on it, even if * it appear that it storing entries in a particular order, because * it may not be available in future version e.g. It guarantees iteration order giving you the ordered. Using Java 8 Streams, we can sort a map both by keys and by values. ![]() In Java, there are multiple ways to sort a Map, but we will focus on Java 8 Streams which is quite an elegant way of achieving this. ** * How to sort HashMap in Java by keys and values. If you need a Map implementation that does iterate in the order of insertion, use LinkedHashMap instead. This is probably one of the most frequently asked questions in Java interviews. Finally, we create a HashMap from that LinkedHashMap, which is what we needed. HashMaps are pretty cool, they allow you to access you information using a named index. To use an ArrayList to sort Java HashMap values, we need to prepare an ArrayList containing all the Map values and then use the sort() method of the Collections.
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