HashMap should be unsorted but still sorts according to key

Question

According to these:

1. http://docs.oracle.com/javase/6/docs/api/java/util/HashMap.html
2. Difference between HashMap, LinkedHashMap and TreeMap
3. jav

Answer 1

You can't make assumptions about the orderings on HashMap objects. They will order as they please, implementation-defined. You should treat them as unordered data structures.